Low velocity AR pistol build for HD?

Discussion of handguns

Re: Low velocity AR pistol build for HD?

Postby OldmanFCSA on Sat May 16, 2020 9:37 am

my 12 gage loaded with #4 buck is not quiet, including racking the slide after 1st shot :deadhorse:
OldmanFCSA
 
Posts: 2980 [View]
Joined: Sat Sep 24, 2011 9:55 pm
Location: Osceola, WI.

Re: Low velocity AR pistol build for HD?

Postby Holland&Holland on Sat May 16, 2020 12:42 pm

Anything better to do?
User avatar
Holland&Holland
 
Posts: 9115 [View]
Joined: Mon Jan 12, 2009 9:17 am

Re: Low velocity AR pistol build for HD?

Postby mc762x54R on Mon May 18, 2020 7:30 pm

Lumpy wrote:
Scratch wrote:
mc762x54R wrote:That's gotta be crazy, crazy loud for HD no? You could load a 9mm carbine / SBR and get that same muzzle energy with less powder, noise, etc.
I'm getting 1320fps with a 124gn JHP 9mm in my little CZ Scorpion...480 ft-lbs

It's not unbearably loud. just a little louder than a normal AR according to my wife. My 20 year old daughter was in the house while I was shooting off the deck. She came out to water the plants and was surprised to see that I was shooting. She thought it was weird that so many birds were hitting the windows today. :o
So it must have not been "that" loud.

I know that a 55gr bullet will have a lot less force at 1900 FPS than a normal 2500 FPS bullet, and a 1320 FPS 124gr bullet may be a lot better. I don't know that. That's what I'm hoping to find out from this thread.
I do have an AR9 build on order, but it could be up to a couple more months.
If you're going to cut the performance down to pistol levels, wouldn't starting with 7.62x39mm make more sense?


Yes - I 2nd this. I have a 16" AR in 762x39, its a ton of fun.
User avatar
mc762x54R
 
Posts: 284 [View]
Joined: Sat Aug 07, 2010 6:56 pm

Re: Low velocity AR pistol build for HD?

Postby Bitter Bastard on Mon May 18, 2020 7:40 pm

Scratch wrote:
mc762x54R wrote:That's gotta be crazy, crazy loud for HD no? You could load a 9mm carbine / SBR and get that same muzzle energy with less powder, noise, etc.
I'm getting 1320fps with a 124gn JHP 9mm in my little CZ Scorpion...480 ft-lbs

It's not unbearably loud. just a little louder than a normal AR according to my wife. My 20 year old daughter was in the house while I was shooting off the deck. She came out to water the plants and was surprised to see that I was shooting. She thought it was weird that so many birds were hitting the windows today. :o
So it must have not been "that" loud.

I know that a 55gr bullet will have a lot less force at 1900 FPS than a normal 2500 FPS bullet, and a 1320 FPS 124gr bullet may be a lot better. I don't know that. That's what I'm hoping to find out from this thread.
I do have an AR9 build on order, but it could be up to a couple more months.


I'd say shoot it back to back with a 16" or 20" AR and then judge the noise. I have a 7.5" SBR that is unbelievably loud and throws a basketball size muzzle flash but the brake can obviously make a huge difference there. Mine has an old DPMS enclosed A2 brake on it. They had an A2 flash hider that has a closed end on it except for a .22 hole for the bullet. Makes quite the racket, which was kinda my point at the time because it is fun. Mine started out as a range toy but I wouldn't hesitate to use it for HD if that is all I had. I'm quite confident it would be effective at in-home ranges, if not exactly the most ideal gun available. There's an old thread on it, accuracy is quite good with an optic, on par with my other ARs, just a lot more drop at 200 yards.

Bitter Bastard
Bitter Bastard
 
Posts: 278 [View]
Joined: Wed May 04, 2011 9:20 am

Re: Low velocity AR pistol build for HD?

Postby Scratch on Mon May 18, 2020 9:04 pm

Lumpy wrote:
Scratch wrote:
mc762x54R wrote:That's gotta be crazy, crazy loud for HD no? You could load a 9mm carbine / SBR and get that same muzzle energy with less powder, noise, etc.
I'm getting 1320fps with a 124gn JHP 9mm in my little CZ Scorpion...480 ft-lbs

It's not unbearably loud. just a little louder than a normal AR according to my wife. My 20 year old daughter was in the house while I was shooting off the deck. She came out to water the plants and was surprised to see that I was shooting. She thought it was weird that so many birds were hitting the windows today. :o
So it must have not been "that" loud.

I know that a 55gr bullet will have a lot less force at 1900 FPS than a normal 2500 FPS bullet, and a 1320 FPS 124gr bullet may be a lot better. I don't know that. That's what I'm hoping to find out from this thread.
I do have an AR9 build on order, but it could be up to a couple more months.
If you're going to cut the performance down to pistol levels, wouldn't starting with 7.62x39mm make more sense?

Again, this gun was a spare parts build that I built just because someone gave me a barrel. I've just come to enjoy it a lot, and am considering using it for HD.
01 FFL in Hudson Wisconsin
User avatar
Scratch
 
Posts: 2019 [View]
Joined: Sat Feb 12, 2011 3:23 pm
Location: Hudson, WI

Re: Low velocity AR pistol build for HD?

Postby Holland&Holland on Mon May 18, 2020 9:05 pm

If your HD gun is not a Ma Deuce backing up the Claymores you set than you are doing it wrong. ;)

:twisted: :twisted: :twisted: :twisted: :twisted: :twisted:
User avatar
Holland&Holland
 
Posts: 9115 [View]
Joined: Mon Jan 12, 2009 9:17 am

Re: Low velocity AR pistol build for HD?

Postby Scratch on Mon May 18, 2020 9:16 pm

Bitter Bastard wrote:
Scratch wrote:
mc762x54R wrote:That's gotta be crazy, crazy loud for HD no? You could load a 9mm carbine / SBR and get that same muzzle energy with less powder, noise, etc.
I'm getting 1320fps with a 124gn JHP 9mm in my little CZ Scorpion...480 ft-lbs

It's not unbearably loud. just a little louder than a normal AR according to my wife. My 20 year old daughter was in the house while I was shooting off the deck. She came out to water the plants and was surprised to see that I was shooting. She thought it was weird that so many birds were hitting the windows today. :o
So it must have not been "that" loud.

I know that a 55gr bullet will have a lot less force at 1900 FPS than a normal 2500 FPS bullet, and a 1320 FPS 124gr bullet may be a lot better. I don't know that. That's what I'm hoping to find out from this thread.
I do have an AR9 build on order, but it could be up to a couple more months.


I'd say shoot it back to back with a 16" or 20" AR and then judge the noise. I have a 7.5" SBR that is unbelievably loud and throws a basketball size muzzle flash but the brake can obviously make a huge difference there. Mine has an old DPMS enclosed A2 brake on it. They had an A2 flash hider that has a closed end on it except for a .22 hole for the bullet. Makes quite the racket, which was kinda my point at the time because it is fun. Mine started out as a range toy but I wouldn't hesitate to use it for HD if that is all I had. I'm quite confident it would be effective at in-home ranges, if not exactly the most ideal gun available. There's an old thread on it, accuracy is quite good with an optic, on par with my other ARs, just a lot more drop at 200 yards.

Bitter Bastard

I have shot it alongside 3 other rifles. A 16" with a VG6 Gamma comp, a 16" with a Miculek brake, and an 18" with an A2 flash hider. The A2 was the quietest but I didn't think any of them were obscenely too loud. I've done some expansion testing with the 7" barrel comparing it to a 16" barrel by filling up a 55 gallon drum with water and shooting down into it from my deck. (And getting very wet in the process) I've only tried some soft point and some V-Max so far, but they are both very similar as far as expansion. I'm going to try some other ammo in the barrel soon.

I think I'm also going to get one of those ARmA15 locking mounts for it and hang a jacket over it like in the videos. It looks pretty slick. Anyone have one?
01 FFL in Hudson Wisconsin
User avatar
Scratch
 
Posts: 2019 [View]
Joined: Sat Feb 12, 2011 3:23 pm
Location: Hudson, WI

Re: Low velocity AR pistol build for HD?

Postby Rowdy Roddy on Sun May 31, 2020 9:08 am

Looks really LOUD. I built an AR-9 for home protection, low velocity and lower noise. Hope you never have to use that in a hurry without earpro indoors or you will pay dearly.
Rowdy Roddy
 
Posts: 25 [View]
Joined: Sun Mar 11, 2018 12:02 pm

Re: Low velocity AR pistol build for HD?

Postby Scratch on Sun May 31, 2020 10:20 am

Rowdy Roddy wrote:Looks really LOUD. I built an AR-9 for home protection, low velocity and lower noise. Hope you never have to use that in a hurry without earpro indoors or you will pay dearly.

It is loud, but I didn't think it was any louder than my other rifles. I'm sure it was, but I couldn't tell with ear pro on, and I'm not interested in shooting with them off. I have shot it indoors in a 10x16 room doing some muzzle flash testing in the dark, but again, I didn't notice an obvious difference in noise between it and some of the other rifles.
01 FFL in Hudson Wisconsin
User avatar
Scratch
 
Posts: 2019 [View]
Joined: Sat Feb 12, 2011 3:23 pm
Location: Hudson, WI

Previous

Return to Handguns

Who is online

Users browsing this forum: Google [Bot] and 2 guests

cron