.300 BLK "build" (new sling)

[rugersol]

Little somethin' I threw together ...



208gr HPBT



~1,050fps ... ready to sight-in!



right-side is 25yd ... left-side is 100yd ... upper-left was last shot ... wind was too fierce Sunday to do much better!

[forcefed]

[JJ]

Very nice! If we could have can's I would have about three of those builds together by now.

What magnification were you running on that scope? When I put my 7" pistol together, I tossed on my T36 and with XM855 I was holding 1 1/2" groups at 100 all day long.

[rugersol]

it's a 1.25-4x20 Leupold "Euro 30" I picked up a few years ago for my .338 Marlin (took it off when I put a peep on that) ... German #4.

I ain't put anything big on either this 'er my .223 pistol ... they're "fun" guns ... but I do shoot 'em at 100yd now 'n then, jest to see what I can do with open sights, 1x, 2x, 'er in this case, 4x.

Hmmm ... now that I say it, maybe I should cut to the chase 'n slap on one of my 20x Simmons Whitetails?!

They sure are fun! ... I may even threaten to buy a deer tag this year!

Oh ya ... jeez! ... almost forgot! ... much love to my mentor, Vlad! ... btw, Vlad, my wife says I can't play with you no more.

[JJ]

I did it just to see what kind of accuracy was possible. I wish I could get the pics off the old PC. The scope with sunshade was as long as the barrel

Anyways, nice build.

Sorry for hijacking.

[BC98]

Nice build!

I've got a 9" upper on my SBR lower and, can or not, I still get a giggle out of shooting subsonics through it.

So far, I've messed with 190gr Bergers and 220 & 240gr SMK and they've been pretty accurate.

Have you done any load development with supersonic loads yet?

[bulletproof]

:shock:

Those bullets look cheap.

[engnerdan]

:shock:

Those bullets look cheap.

That is a problem with this round, I have not found a great price on the 200+ grain bullets. It sure is not as cheap to load for as 223.

rugersol,
Did you buy the brass or make your own? I have done it both ways and the clear winner had been brass from "Brad" on the internet. I made 400 rounds myself from 223 brass, I will never do that again unless I find myself with tons of time to waste.

[rugersol]

Nice build!

I've got a 9" upper on my SBR lower and, can or not, I still get a giggle out of shooting subsonics through it.

So far, I've messed with 190gr Bergers and 220 & 240gr SMK and they've been pretty accurate.

Have you done any load development with supersonic loads yet?

Ya ... can 'er not, I think it's a hoot! ... 'course, I really like my .223, too!

I jest got the thing together Friday nite ... I had ordered the 208's some time ago. I'm jest now gettin' into the mindset of workin' up a deer load. I'm lookin' at the Hornady 160gr FTX (.30-30) ... I called Hornady ... dude said it's what he uses in his Whisper ... says it'll expand at 1,500fps. I got data that leads me to believe I could make up to 1,900fps m/v from my 9in with it ... that'd make it a 190yd gun ... I doubt I'd take a 190yd shot with it, though!

I'll order some bullets this 'er next week 'n work up some loads.

240gr SMK?! ... I jest 'bout had to change my drawers when I first seen the 208's, in person ... I'm almost a little afraid to order 240's! ... do ya measure your seating in thousandths off the primer?

[rugersol]

It sure is not as cheap to load for as 223.

$0.30/ea for bullets will certainly keep the round-count down ... bbl should last me the rest of my life!

I'm hearin' of guys casting bullets for this. I don't know about what gets into the gas-tube? ... then again, with the savings, I could probly put in a new tube every other month!

rugersol,
Did you buy the brass or make your own? I have done it both ways and the clear winner had been brass from "Brad" on the internet. I made 400 rounds myself from 223 brass, I will never do that again unless I find myself with tons of time to waste.

As I said, I jest got the thing together ... ordered some brass 'n bullets so I could try it out, right away. I was intending to get brass from .223. But the Lee case-length gauge is backordered 'til September ... and Lee wants 3x the $ for it, otherwise. When I bought the brass, it was ... jeez, I wanna say AAC?! ... primed ... and it was a lot cheaper than any other unprimed ... so I ordered a few hunderd ... particularly in light of the gauge bein' so far out.

Had a little trouble with my gas-block slidin' forward ... and I started with very light loads ... first few wouldn't lock the bolt back ... so I got 100% of my brass back on the first outing. If I can keep that up near 90%, I'll be happy.

IIRC, Vlad makes his outta .223 ... sounded like a slick operation! ... oh ya ... now I remember ... he bought that trimmer deal from Little Crow! I gotta ask him what he does for deer loads, too?

[engnerdan]

This is the place I found, it looks like the price went up quite a bit but it does not seem terrible.

http://www.bradswarehouse.com/


Making it myself is a little better of a value now that I see it is $28 per 100 and not $17 that I remember it being. Still very time consuming if you do not have a Dillon power trimmer to cut the brass to size.

[BC98]

Ya ... can 'er not, I think it's a hoot! ... 'course, I really like my .223, too!

I jest got the thing together Friday nite ... I had ordered the 208's some time ago. I'm jest now gettin' into the mindset of workin' up a deer load. I'm lookin' at the Hornady 160gr FTX (.30-30) ... I called Hornady ... dude said it's what he uses in his Whisper ... says it'll expand at 1,500fps. I got data that leads me to believe I could make up to 1,900fps m/v from my 9in with it ... that'd make it a 190yd gun ... I doubt I'd take a 190yd shot with it, though!

I'll order some bullets this 'er next week 'n work up some loads.

240gr SMK?! ... I jest 'bout had to change my drawers when I first seen the 208's, in person ... I'm almost a little afraid to order 240's! ... do ya measure your seating in thousandths off the primer?

Interesting info about the Hornady bullet. Their not cheap but the Barnes 110gr Tac TX (300 BLK-specific) is also designed to function with lower velocities. I can't remember where but I've seen a pic of one of the Barnes bullets that had been recovered from a block of ballistic gel at 300 yards and had fully expanded. The test gun was an AAC 9" upper. How long is the Hornady bullet and did the Hornady tech give you suggestions on load data. I've got a little bit of load data with a 150gr Fusion projectile and I'll get some more from some 145 and 150gr FMJ bullets later this week. If you need, I can share some of the data if you think it will help. Based on what I have so far, 1900 shouldn't be hard to reach as long as that bullet isn't super long.

Ya, that 240gr is ridiculous. It is suprisingly longer than a 220gr. The length difference between a 200 and a 220gr is not nearly as dramatic as between the 220 and the 240gr.

I never had any interest in it before but I might even start casting bullets for this gun if I can find a cheap enough source of lead. The new Lee 230gr molds and the 247gr mold from NOE are very intriguing.

[rugersol]

Interesting info about the Hornady bullet. Their not cheap but the Barnes 110gr Tac TX (300 BLK-specific) is also designed to function with lower velocities. I can't remember where but I've seen a pic of one of the Barnes bullets that had been recovered from a block of ballistic gel at 300 yards and had fully expanded. The test gun was an AAC 9" upper. How long is the Hornady bullet and did the Hornady tech give you suggestions on load data. I've got a little bit of load data with a 150gr Fusion projectile and I'll get some more from some 145 and 150gr FMJ bullets later this week. If you need, I can share some of the data if you think it will help. Based on what I have so far, 1900 shouldn't be hard to reach as long as that bullet isn't super long.

Ya, that 240gr is ridiculous. It is suprisingly longer than a 220gr. The length difference between a 200 and a 220gr is not nearly as dramatic as between the 220 and the 240gr.

I never had any interest in it before but I might even start casting bullets for this gun if I can find a cheap enough source of lead. The new Lee 230gr molds and the 247gr mold from NOE are very intriguing.

Ya, I saw the stuff on the "varmint" bullets ... the "black-tips" look like they were designed for the .300 BLK?! ... but if I'm gonna shoot .308 bullet, I want it to be 150gr+ ... if I can. If I can't get them 160's to go close to 1,900fps, I may back off of that. Hornady's got a 140gr, otherwise same bullet ... I should be able to get 1,900fps+ with that ... and I suspect it might open up a skosh quicker, yet?!

They didn't give me suggestions on data ... didn't ask ... I got a nice pic from Accurate for their powders ... and a fair bit of 5744 on-hand, for my .45-70 and .45-90 ... they list a real nice range, too. It'd be nice to correlate to something ... but, I've loaded a lotta different stuff with 5744 ... at this point, I think if somethin' weren't right, I'd have a purdy good clue 'bout it. As it was, my first loads ... despite not locking the bolt back ... were everything I expected.

That 150gr Fusion ... is that your deer bullet, then?

I've never cast bullets 'fore ... I been tryin' to fight the urge ... but these $0.30/ea .308's are probly gonna be what pushes me over the edge! Lemme know if ya beat me to them molds!

[JJ]

Have you looked at running Blue Dot in those loads? It's not sensitive to position in the case so flashover is no real concern. I have seen some reports of guys using it with success.

[rugersol]

Have you looked at running Blue Dot in those loads? It's not sensitive to position in the case so flashover is no real concern. I have seen some reports of guys using it with success.

You're talkin' the 160gr FTX's? ... I was jest gonna start with the 5744.

What velocities are they gettin' with what bullets? ... bbl-length?