Testing new Long Range rifle.

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Re: Testing new Long Range rifle.

Postby LongRange on Wed Nov 09, 2011 8:44 pm

RAGGED wrote:

In the spirit of legitimate debate I’d have to disagree with your logic, anyone who shoots at longer ranges knows ballistic drop over a distance is in fact the easiest variable to work with, in fact its not much of a variable with modern range finders, mobile ballistic apps and accurate chronographs. In long range shooting the true variable is the wind as its almost impossible to peg correctly over the entire distance the bullet travels, that’s where the true skill comes in and that’s where the highest chance of error can occur, that’s why a bullet with a great BC is an absolute must when looking for long range accuracy. While I agree you got a flat shooter it’s a dog in the wind, at least with the load posted above (I’ll even spot you the 4200 FPS you are hoping for) . Your load would have about 66.5” of wind drift with a 10mph full value cross wind, and I come up with 159” of drop from a 100yd zero, contrast that to my 338LM load (300gr SMK @ 2750 FPS) which only has 35.5” of wind drift with the same cross wind. At 1500 yards that spread is even worse, your load would have 186” of wind drift where as the 338 would be 87.5”, energy again goes to the 338 Lapua by a landslide, 346 ft lbs for your load, 1492 ft lbs for my 338 load.

Your numbers are not jiving with the 4 programs I have access too. I get much much less than what you are claiming, using a 130gr Barnes TTSX in .277 cal (.392 G1 BC) and your 4200 FPS numbers I’m coming up with about 900 ft lbs of energy @ 1000, not the 2005 you are claiming, also I come up with around 160” of drop @ 1000, not the 128” you have, something is not right, am I missing something? I confirmed these numbers using JBM, Bullet Flight, Ballistic FTE and the Sierra software. My 338 LM has 2330 ft lbs of energy @ 1000. No disrespect but again it appears you are playing fast and loose with your data, what gives man, we are all gun guys here, no need to try and shine up a turd, Sam or JJ or anyone else run these numbers and let me know what you come up with, I want to know if I’m loosing it or not.




Actually my numbers were based on a 120gr banded solid round I use for paper and the B.C is actually .695 so the 4200fps is actual and the wind drift is actually 31" @1000yrds. I dont want to get into a pissing contest, however the numbers I am showing are TESTED not internet guru numbers. I have tested the 338L, Warbird , the 30-378, and even the 408 chey. Bottom line this caliber outperforms them all in more ways than one. I am unsure of where you came up with numbers for a .338L non-magnum round shooting a 300gr round that fast or that hard @ 1000yrds however I sure would like to see the chrony and gammit. Here are actual numbers even if in your 300gr 33cal round is B.C .700 You are WAYYYYY off..

HERE IS 338 LAPUA

Image

AND HERE IS MY RIFLE....

Image

I hope this helps to explain things easier, This is based on YOUR info and load data btw.
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Re: Testing new Long Range rifle.

Postby Rip Van Winkle on Wed Nov 09, 2011 10:18 pm

Not that I want to join the urinating contest over which barrel burning caliber is better than the other, but I think your being a bit optimistic on your ballistic coefficient numbers. From the limited research I've done, the G1 BC numbers I come up with for a .277 cal. 130gr Barnes bullet is somewhere in the neighborhood of .392 to .466.
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Re: Testing new Long Range rifle.

Postby shooter115 on Wed Nov 09, 2011 10:58 pm

Rip Van Winkle wrote:Not that I want to join the urinating contest over which barrel burning caliber is better than the other, but I think your being a bit optimistic on your ballistic coefficient numbers. From the limited research I've done, the G1 BC numbers I come up with for a .277 cal. 130gr Barnes bullet is somewhere in the neighborhood of .392 to .466.


I was thinking the same thing. To the OP: Could you post a little more detail and a picture of the bullet you are using for this set-up. The numbers just don't seem to add up. Please don't get all defensive again. I've just never seen a bullet in that weight/diameter make a .695 BC.
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Re: Testing new Long Range rifle.

Postby LongRange on Wed Nov 09, 2011 11:07 pm

Rip Van Winkle wrote:Not that I want to join the urinating contest over which barrel burning caliber is better than the other, but I think your being a bit optimistic on your ballistic coefficient numbers. From the limited research I've done, the G1 BC numbers I come up with for a .277 cal. 130gr Barnes bullet is somewhere in the neighborhood of .392 to .466.



... and again.. 120gr Tungsten ULD Tipped Secant Ogive bullet, B.C .695 , The Barnes Banded solid currently pulls a steady .480 on avg. I have been doing this a long time fellas, as a matter of fact this is all i do, I shoot. Its my job, my hobby and my passion.

Even a 130gr Hornady hunting round(a round that in a basic .270 win is 3250fps) fired @4000fps and a B.C of 480 still has 50% drop and less wind shear of the 338L. No matter how you slice it, this round is simply better, cheaper and has far less recoil than the 338L. Keep in mind the 338L is maxed out in almost every load used today, its High CUP Pressure and limited ability are due to a terrible parent case in the 416 rigby, although the 338 case has been redesigned, it still has a weak base. Here we are comparing a maxxed out caliber to that of one that still hasnt been pushed to its full potential.

Image

Remember, we were comparing IF the 338L had a .700 B.C.. here is the ACTUAL B.C DATA FOR THE 338L.. Now sure, there are ropunds for the 338L with huge B.C over .750, but they are useless in every application except maybe punching thru an APC at 50 feet. Not trying to crap on 338L lovers, but lets face it, the thing is a brick chucking hog leg. Just to come close to the 338L's horrible numbers I would have to use a round with a B.C of .210 and fire it at 3600fps. Anyone with a nice load in their 300 RUM can beat it. Dont believe the Hype folks, the 338L has never been able to live up to the claims. Lapua Scenars coming soon in .277 will have an B.C of .704 ... gee thats gonna really make some nice numbers!

Image


Also someone mentioned that nobody uses weatherby's for record shooting..

A 300 Weatherby necked down to a 7mm. Rifles chambered for this round have standard throat with no free bore. In the early 1960's Mr Howard Wolfe a custom gunsmith and target shooter of Mifflinburg,PA. started playing with this cartridge for 1000 yard target shooting. It was reportedly first tested by RobertHutton of the Guns & Ammo Magazine Technical Staff in 1961 and 1962.

In October,1970 Mary Louise Devito of Willaimsport, PA used this cartridge with the Sierra 168 gr Matchking bullet in a heavy benchresr rifle to break the 1000 yard benchrest record. Her record group was 7 11/16 inches. Her rifle built by Howard Wolfe, was on a FN400 benchrest action with a 30 inch Hart stainless steel barrel 1 1/4 inches in diameter with a 1 in 9 inch twist. Her ammunition, loaded by her husband was as follows;
300 Weatherby case necked down to 7mm
primer 215 Federal
powder 87 grs. of H570
bullet Sierra 7mm 168 gr. Matchking
velocity 3254 feet per second
loaded overall length of round 3.725 inches



http://www.corbins.com/bullets.htm#secant

http://www.corbins.com/highbc.htm
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Re: Testing new Long Range rifle.

Postby RAGGED on Thu Nov 10, 2011 8:58 am

LongRange wrote:
... and again.. 120gr Tungsten ULD Tipped Secant Ogive bullet, B.C .695 , The Barnes Banded solid currently pulls a steady .480 on avg.


PLEASE POST INFO & LINK TO THIS .695 BC 120GR .277 CAL bullet, I've never heard of this bullet, its not whats shown in your pic and not what was decsribed in your first post, you said that was a TSX and it clearly is tipped so one could only assume its a 130 TTSX, why are you doing load development with bullets you don't plan on using? Seems a bit odd sonsidering the short life of the bbl.




I have been doing this a long time fellas, as a matter of fact this is all i do, I shoot. Its my job, my hobby and my passion.


And thats true of many people here, get off your high horse already.



Keep in mind the 338L is maxed out in almost every load used today, its High CUP Pressure and limited ability are due to a terrible parent case in the 416 rigby, although the 338 case has been redesigned, it still has a weak base. Here we are comparing a maxxed out caliber to that of one that still hasnt been pushed to its full potential. [/img]


My loads are listed in books and on Hodgdons website, 92.2 gr of Retumbo isn't some overly stiff load, 2750-2775 FPS is pretty common place for 300gr pills out of the Lapua, are you trying to tell us you can push yours to above 4200 and that its pressure won't be near max? Give me a break, also the Lapua case is one of the strogest in the world, operating in the worl with a operating pressure of well over 60,000 PSI (68,000 according ot most experts)

Remember, we were comparing IF the 338L had a .700 B.C.. here is the ACTUAL B.C DATA FOR THE 338L.. Now sure, there are ropunds for the 338L with huge B.C over .750, but they are useless in every application except maybe punching thru an APC at 50 feet. Not trying to crap on 338L lovers, but lets face it, the thing is a brick chucking hog leg. Just to come close to the 338L's horrible numbers I would have to use a round with a B.C of .210 and fire it at 3600fps. Anyone with a nice load in their 300 RUM can beat it. Dont believe the Hype folks, the 338L has never been able to live up to the claims. Lapua Scenars coming soon in .277 will have an B.C of .704 ... gee thats gonna really make some nice numbers!


Earth to WBY Fanboy, the 300gr SMK has a CONFIRMED BC of over .750, 2500FPS and above it’s .768, 2300 FPS and above .760, 1800fps and above .750, so its at or well above .750 BC for damn near its entire trip to 1000, using single static BC for trips to 1000 is Bush league, I would think an expert like yourself would know your BC changes as it slows and that ballistic turd of a bullet you are using is bleeding off both.
I’m currently working with the new 300gr Berger Hybrids, the BC I used for my number above are based on Bryan litz’s real world Experement derived G7 BC data, but the stated start value for the bullet is .818 BC.

And if I really wanted to blow your mind I’d buy some lathe turned solids fomr GS is south Africa, they have some 338 pills with over 1.0 BC, but I would need to re-barrel as they are much longer and would need a bit more twist than the 1-10 I have now.

Also both the 300 gr SMK's and 300 Bergers work great for long range game hunting and with a proper brake the rifles are plenty tolerable. Also just about every USMC sniper kill in the past 3 decades has been at the hands of a 30 cal SMK, nice try.

Apparently all those guys in the military don’t know shat, apparently the SOCOM PRS Program (long range rifle trials) should have been asking for rifles chambered in WBY rounds and not the 338 Lapua, silly people, everyone knows the 338 Lapua is a crappy long range choice!


Also someone mentioned that nobody uses weatherby's for record shooting..

A 300 Weatherby necked down to a 7mm. Rifles chambered for this round have standard throat with no free bore. In the early 1960's Mr Howard Wolfe a custom gunsmith and target shooter of Mifflinburg,PA. started playing with this cartridge for 1000 yard target shooting. It was reportedly first tested by RobertHutton of the Guns & Ammo Magazine Technical Staff in 1961 and 1962.

In October,1970 Mary Louise Devito of Willaimsport, PA used this cartridge with the Sierra 168 gr Matchking bullet in a heavy benchresr rifle to break the 1000 yard benchrest record. Her record group was 7 11/16 inches. Her rifle built by Howard Wolfe, was on a FN400 benchrest action with a 30 inch Hart stainless steel barrel 1 1/4 inches in diameter with a 1 in 9 inch twist. Her ammunition, loaded by her husband was as follows;
300 Weatherby case necked down to 7mm
primer 215 Federal
powder 87 grs. of H570
bullet Sierra 7mm 168 gr. Matchking
velocity 3254 feet per second
loaded overall length of round 3.725 inches




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Re: Testing new Long Range rifle.

Postby Rip Van Winkle on Thu Nov 10, 2011 9:58 am

... and again.. 120gr Tungsten ULD Tipped Secant Ogive bullet, B.C .695 , The Barnes Banded solid currently pulls a steady .480 on avg. I have been doing this a long time fellas, as a matter of fact this is all i do, I shoot. Its my job, my hobby and my passion.

With all due respect, I know a thing or two about this subject also. Unless you are adding a 30-40gr tip to your 120gr bullet I see no way to get your claimed BC number. Now a truly awesome bullet would have a tungsten core and weigh in the 190-200gr range. That bullet would have an impressive BC.
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Re: Testing new Long Range rifle.

Postby LongRange on Thu Nov 10, 2011 10:38 am

OK well I can see where this is headed, someone took the 338L pill and now thinks its the end all be all.. So be it, keep shooting your rock chucker if it makes you feel like a "super sniper" , the reason the government uses the round is COST. It sure as hell isnt due to performance. Next thing you will tell us is the use of a 50 cal is for performance when in fact it is due to the mass amounts of ww2 surplus ammo they were holding and figured it was a good use of it.

My numbers are what they are, I can understand the resentment after swallowing the spoon fed bs of the 338L, but saying a NON-BELTED cartridge is "one of the strongest" cases there is is simply REDICULOUS! Most factory Weatherby rounds run a steady 64000 CUP, hell the action used for most 338L builds cant tolerate over 72000 CUP, while any Mark V action can withstand over 125000 CUP. In case you arent aware, the 338L MAXIMUM CUP LOAD IS 60,910.. thats It, no more or you will be digging brass from your bolt face, try it and see. I happen to know this because in pushing rounds INCLUDING THE 338L to its max, I have streched more than one action. The 338L has NEVER PASSED U.S GOVERNMENT TESTING STANDARDS.. It only passed the French standards, it failed ALL U.S STANDARDS. Wanna guess why? Because in trying to get a stronger case, it loses too much performance as it would take a case thats 4 times thicker than a standard magnum case. Lap off the Kool-aid dude, you need to do some testing not reading. Might wanna look up that info, easy to find.

Next thing you will be saying is that the 338L outperforms a 338-378 WBY magnum.. simply because unlike the wildcat 338L that is a maxed out round, the 338-378 WBY is a FACTORY trusted round in a Mark V action and 26" barrel, thus the numbers are derived from that. Lets use some simple math..
Same bullet.. 338L pushes with 100GR of powder the 338-378 pushes with 110gr of powder.. Now since you are such a technical wizard, please for the folks at home tell us which will outperform... DUH! There are at least 2 calibers in the same class as the 338L that spank it like a 4yr old in a K-Mart, this is A KNOWN FACT to anyone who shoots LR rounds. Dont like it fine.. but dont sit here and blow smoke up peoples ass to justify your use of an inferior round, perhaps you truely dont know any better, and it seem thats a growing fad in LR Ball testing these days, some dood gets a rilfe based on some internet desk jockeys info and then claims it to be the end all be all.. I dont shoot whats on the shelf, I spend tens of thousands testing a creating better calibers and rounds, so what I said here is definately not accepted science, just as the 338L was created in 1999 and wasnt accepted as a LR round until the early 2000's. Lets let the future decide.

As for my .277 round with a .695 B.C , as i put in my last posting, I had it Swaged by a gentlement in Louisiana, after we were unable to get any more XLC style rounds. I did note that there are very high B.C rounds in the 338 class however they are mostly unuseable in almost all weapons built in that class, as you stated, a rebarrel would be needed, yet someones still doing it, well ****, every single caliber in the world can do the same thing, however most manufacturers know that most people do not want a rilfle that can only shoot ONE BULLET. To make a round of equal B.C as a 338, all one has to do is scale the same round down to a .277 caliber and bingo! you have equal B.C but guess what happens.. you have to rebarrel it too! Wow isnt that surprising?!?! Geesh someone get the net.. Now the one thing noboy has mentioned is the accuracy of such rounds, when in fact a high B.C does not mean and accurate round, anyone here want to guess what the best group a .338L firing a B.C over .400 has ever shot at a grand? I have a Benjamin that says its larger than 10".

Lets see this in a USEABLE manner.. will a .277 caliber round with over 1000lb feet of energy be lethal to animal and personel? Will it drop less? be more field adjustable? well the round I am shooting is supersonic to 2100 meters.. the 338L is supersonic to 1300 Meters, the 338 drops twice as much even when compared to a FACTORY HUNTING ROUND. So please tell these good folks how PRACTICAL a 338L is in comparison please? Oh yea and BTW, there are 1.06 B.C 30 cal rounds, they are Kirkasite and not legal for use here, so where would that put your 338L against a standard 300 win mag? Welcome to the world of weapons, you have alot to learn just as I do, I simply choose to not do it with blinders on.
In case you were wondering, the Kirkasite rounds was tested in the 30-378WBY @ 8000fps in a 100gr design and over 6600 ft lbs of energy, wanna run the calculator on that and see where it falls as the end all be all?
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Re: Testing new Long Range rifle.

Postby LongRange on Thu Nov 10, 2011 10:41 am

Rip Van Winkle wrote:
... and again.. 120gr Tungsten ULD Tipped Secant Ogive bullet, B.C .695 , The Barnes Banded solid currently pulls a steady .480 on avg. I have been doing this a long time fellas, as a matter of fact this is all i do, I shoot. Its my job, my hobby and my passion.

With all due respect, I know a thing or two about this subject also. Unless you are adding a 30-40gr tip to your 120gr bullet I see no way to get your claimed BC number. Now a truly awesome bullet would have a tungsten core and weigh in the 190-200gr range. That bullet would have an impressive BC.



YAY!! you got it! See and by adding that tip, what would be the weight and B.C of the round? lets say falling somewhere in the 157gr weight area... RVW at least you Read what i posted instead of getting your panties in a wad over someone peeing on your favorite "super secret squirrel sniper gun"
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Re: Testing new Long Range rifle.

Postby RAGGED on Thu Nov 10, 2011 12:26 pm

LongRange wrote:OK well I can see where this is headed, someone took the 338L pill and now thinks its the end all be all.. So be it, keep shooting your rock chucker if it makes you feel like a "super sniper" , the reason the government uses the round is COST. It sure as hell isnt due to performance. Next thing you will tell us is the use of a 50 cal is for performance when in fact it is due to the mass amounts of ww2 surplus ammo they were holding and figured it was a good use of it.


Your thought are so completely jumbled it’s hard to form a response because they go every which way, you do realize you pretty much just stated that SOCOM is looking at 338 caliber rifle submissions because like WW2 surplus 50 cal rounds they are cheap and plentiful? Then just sentences later you admit the round didn’t even hit the market till 1999…… make up your mind. I really have zero allegiance to any caliber (unlike you) I’d be happy with any big 338 whether it be the RUM, the Edge or god forbid the WBY, the only thing that pushed me to the Lapua was the quality brass and a pretty nice rifle that came chambered in it from the factory, I don’t know about you but that seems like pretty solid logic to me and by no means puts me into some ultra-biased fanboy camp.




My numbers are what they are


Whats that? Made up and completely fabricated? You have ZERO proof of this .695 BC and ZERO independent corroboration, and yet your comparing it to off the shell bullets I could go buy from Gunstop this afternoon? Again give me a break, you’re nuckin futs!



I can understand the resentment after swallowing the spoon fed bs of the 338L, but saying a NON-BELTED cartridge is "one of the strongest" cases there is is simply REDICULOUS! Most factory Weatherby rounds run a steady 64000 CUP, hell the action used for most 338L builds cant tolerate over 72000 CUP, while any Mark V action can withstand over 125000 CUP. In case you arent aware, the 338L MAXIMUM CUP LOAD IS 60,910..


In case you’re not aware this has been debate over the 338L 60k cup rating for years, while the 300LM maintains its 68K cup rating its big brother got had its 68k rating backed down to 60K, so tell me how a round with the EXACT same parent case can have a different yield point, it can’t, look at all your WBY’s, the max pressure is the same for the case no matter what the neck is set at, 300 & 338 RUM, same case different neck, same 65K cup rating, why is it that the 338L got a downgrade? I’ll tell you why, it was a knee jerk reaction made by some bloated governing body, plain and simple, the case is one of the strongest out there, this is undisputed.



that’s It, no more or you will be digging brass from your bolt face, try it and see. I happen to know this because in pushing rounds INCLUDING THE 338L to its max, I have stretched more than one action


When using bullets with monster .750-.818 BC’s you don’t need to run them on the edge, so there is no issue, it whoops your made up fairy tale round without any magic, just a big long heavy bullet that leaves the stick at a pretty good rate of speed.





Next thing you will be saying is that the 338L outperforms a 338-378 WBY magnum.. simply because unlike the wildcat 338L that is a maxed out round


The 338L is not a Wildcat, not even close, I’m sure many many more 338L are sold each year than your 338 WBY, and factory ammo is no more maxed out that any of WBY offerings, it can push bullets with less powder because its more efficient, its larger in diameter, same reason why many of the short mags can push pills to long action mag specs with less powder.

As for my .277 round with a .695 B.C , as i put in my last posting, I had it Swaged by a gentlement in Louisiana, after we were unable to get any more XLC style rounds.


So your still maintaining you have a 120gr pill with a .695 BC in .277 caliber?

I did note that there are very high B.C rounds in the 338 class however they are mostly unuseable in almost all weapons built in that class, as you stated, a rebarrel would be needed


Again, lay off the crack pipe, almost every single rifle sold in 338L is completely capable of shooting 300gr pills including the .768 SMK and the .818 BC Berger, 1-10 twist is all it takes, the re-bbl only comes into play with the custom rounds (like yours) that are lathe turned and are much much longer requiring a 1-7/8 twist vs the 1-10 twist that is standard on 98% of all factory 338L rifles .




Now the one thing noboy has mentioned is the accuracy of such rounds, when in fact a high B.C does not mean and accurate round, anyone here want to guess what the best group a .338L firing a B.C over .400 has ever shot at a grand? I have a Benjamin that says its larger than 10".


You are so full of it, My TRG, a 1005 complete factory rifle will run better than 10” @ 1000 all day long and that’s typical of most owners, it will run 1-2” @ 400 yds in the wind and off a shaky bipod, If I put a forearm plate on it and run it off my SEB rest it will do even better, I have single digit ES’s on my rounds, my experience has always been that rounds loaded to the absolute max rarely group well, the best accuracy node is often found a bit lower than that, speed and pressure start to do very odd things near the top of the ladder, speed is nothing without accuracy. Let me know when you want to see it, we can hit GRRC any time you want, bring your speed demon and we can verify chrono data and bullet drop @ 1000

Lets see this in a USEABLE manner.. will a .277 caliber round with over 1000lb feet of energy be lethal to animal and personel? Will it drop less? be more field adjustable? well the round I am shooting is supersonic to 2100 meters.. the 338L is supersonic to 1300 Meters, the 338 drops twice as much even when compared to a FACTORY HUNTING ROUND.


Again who cares about drop, at 1000yd ranges it’s not like you are doing Kentucky windage and holding over, you are making a sizable scope adjustment and it’s just as easy to come up 25 MOA as it is to come up 23. Supersonic till 1300? Again give it up, stop trying to sand bag the 338’s with crappy .4 BC’s, with the 300gr SMK’s and Bergers EVERYONE runs they are supersonic well past 1500 yds, nearly 2000 yards when loaded near the edge of the pressure range using the Bergers (not over)



So please tell these good folks how PRACTICAL a 338L is in comparison please? Oh yea and BTW, there are 1.06 B.C 30 cal rounds, they are Kirkasite and not legal for use here, so where would that put your 338L against a standard 300 win mag? Welcome to the world of weapons, you have alot to learn just as I do, I simply choose to not do it with blinders on.


You are way too much fun, so let me get this straight, the 338L is unpractical, even thoe I can go buy bullets for it in town at a modest price and they will run right with your Wildcat running hand made custom bullets and shockingly they don’t measure up to the performance of something you can’t even buy, yes, very unpractical. I think it’s funny that you have to wildcat a round, get custom made bullets and use BC’s half of what they should be just to make your case.
In case you were wondering, the Kirkasite rounds was tested in the 30-378WBY @ 8000fps in a 100gr design and over 6600 ft lbs of energy, wanna run the calculator on that and see where it falls as the end all be all?


Yay for WBY, I bet you could load a 338L case to damn near the same specs, what’s this have to do with the price of tea in china? You have to be the single worst debater I’ve ever encountered.
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Re: Testing new Long Range rifle.

Postby Maniac117 on Thu Nov 10, 2011 12:33 pm

:catfight:


:D
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Re: Testing new Long Range rifle.

Postby RAGGED on Thu Nov 10, 2011 12:39 pm

LongRange wrote:YAY!! you got it! See and by adding that tip, what would be the weight and B.C of the round? lets say falling somewhere in the 157gr weight area... RVW at least you Read what i posted instead of getting your panties in a wad over someone peeing on your favorite "super secret squirrel sniper gun"



I'm lost, so what is it, 120gr or 157? Got a picture of this top secret .695 BC 120 gr pill? Being completely honest if there were such a thing I'd be all over it for my new F-Class rifle.

Maniac117 wrote::catfight:


:D


Its not even like that, I'm constantly wanting to know more, if there is some super secret stuff out there then I'd love to know about it, but it just doesn't make sense and it doesn't help when people intentionally use bad numbers when debating, not to mention bad info.
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Re: Testing new Long Range rifle.

Postby JJ on Thu Nov 10, 2011 3:58 pm

:tantrum: :angryvillagers:
:picsneeded:

Where is the popcorn when you need it?
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Re: Testing new Long Range rifle.

Postby RAGGED on Thu Nov 10, 2011 5:30 pm

JJ wrote::tantrum: :angryvillagers:
:picsneeded:

Where is the popcorn when you need it?



I got a little bored this afternoon and layed out a .277 cal VLD in CAD, now of course there are some variables like jacket thickness ect but I ran it a few different ways, lead core, solid lead, tung core solid tung, 120gr and 157 gr, any way you put it with that little bit of weight in that caliber its either going to be a bullet that is super short with marginal bearing surface or longer VLD type profile with no bearing surface. I just can't see this being real. I wish the guy would just post the damn thing, I'll go on record saying I think he’s full of it and pulling this .695 BC out of his you know what, it just doesn't fly given the info he’s provided.

So Mr big shot custom bullet maker dude, what is the overall length of this magic bullet, what is the angle of the boat tail and how long is it, how much bearing surface is there, and what is the weight, you said 120, now I see this 157 number, so what is it. Also how are you coming up with the .695 BC, I’d be interested in knowing. I know Lapua uses Doppler radar as does Sierra, I know many are simply calculated using real work experiments, shooting over chronographs on both ends. If what you say is true, that you can accurately fire a 120gr .695 BC bullet @ 4200 FPS then I’ll be the first to call you a genius and bow at your feet, but for some reason this just seems really fishy, flys In the face of everything I know to be true.
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Re: Testing new Long Range rifle.

Postby rugersol on Thu Nov 10, 2011 5:48 pm

RAGGED wrote:You have to be the single worst debater I’ve ever encountered.

That's quite an insult ... comin' from a master debater ... such as yerself. :?
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Re: Testing new Long Range rifle.

Postby Rip Van Winkle on Thu Nov 10, 2011 7:13 pm

My final thoughts on this matter. As I stated above, I have no dog in this purse fight, I was merely pointing out BC numbers which seemed much higher than they could realistically be. If these .277 caliber 120gr bullets have a 40gr tungsten tip added to them I can see how the BC number could be higher. Now, .695 might still be a bit optimistic, but it is close enough to a fair fudge factor to not bring up.

Lastly, if I was shooting a cartridge that I was only going to get around 1000 accurate rounds out of a barrel and I was using expensive handmade bullets, not only would I know exactly how much every bullet weighed, I would have them serial numbered so I could log how every one of them flew.

Let the purse fight continue.
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