View Full Version : .30 cal AR options????
Helen Keller
06-28-2012, 07:17 PM
I want to stick with .30 cal for the AR I'm making since I already have one in .223 and have a near limitless supply of 308 bullets.
Whats the options out there for chamberings that utilize 308 bullets and retain use of the standard lower/magazine???
I'm not interested in 762x39 , even though I cast .311 bullets I have no desire to go down that route.
FunkyPertwee
06-28-2012, 07:39 PM
I don't know a thing about reloading, but .300 BLK looks like its up my alley, being an AK guy at heart.
I talked to a guy today with a custom heavy barrel DPMS LR-308, he was super impressed with it, but you know how that can go. Talked to another fellow with a .300 BLK and a suppressor, and once again he was very impressed with his own rifle.
.300 BLK is the only .30 cal round I know of that requires only a change of barrels for the AR.
Schuetzenman
06-28-2012, 07:49 PM
300 blackout and .30 Whisper but the Blackout seems to be taking off far better than the Whisper ever did. http://300aacblackout.com/ It, the 300 Blackout does seem to be the one to go with if you want .30 cal. and standard magazines.
L1A1Rocker
06-28-2012, 07:50 PM
300 BLK all the way. Just a barrel swap and all else is the same.
Mine: http://s79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/?action=view¤t=HPIM0941.mp4
Their website: http://300aacblackout.com/
Depending on what projectiles you have you may need to modify a magazine or two. Some people have needed to file down the internal rib on P Mags.
Helen Keller
06-28-2012, 07:56 PM
Hmmmmmmm, just the barrel eh/??
What type of pressure rated Can do you gotta use??
L1A1Rocker
06-28-2012, 09:10 PM
Hmmmmmmm, just the barrel eh/??
What type of pressure rated Can do you gotta use??
If you run sub-sonics ONLY - many people are doing fine with 9mm cans. If you want to run super-sonics you'll need to step it up. Most are running a 308 can for that. So far I think the only company making a specific 300 BLK can (subs and supers) is AAC. (Liberty MAY be making one now but I'm not sure) Also, if you plan on running cast bullets you'll need a can that can be taken apart for cleaning.
nfa1934
06-28-2012, 09:17 PM
Hmmmmmmm, just the barrel eh/??
What type of pressure rated Can do you gotta use??
A lot of people are using pistol cans with subsonic ammo. I just put my .45 Osprey on mine, haven't fired it yet.
Helen Keller
06-28-2012, 09:41 PM
A lot of people are using pistol cans with subsonic ammo. I just put my .45 Osprey on mine, haven't fired it yet.
Subs is all I'd run anyways.
Have a .45 Blackside too.
What barrel length though??
L1A1Rocker
06-28-2012, 10:13 PM
Subs is all I'd run anyways.
Have a .45 Blackside too.
What barrel length though??
300BLK is Sami speced with a 16 inch barrel. It does very well in an SBR though.
FunkyPertwee
06-28-2012, 10:36 PM
SBR it!
Then when its suppressed its still a reasonable length.
Helen Keller
06-28-2012, 10:50 PM
SBR it!
Then when its suppressed its still a reasonable length.
my AR is already SBR.
I'm thinking maybe 11.5" barrel .
L1A1Rocker
06-28-2012, 11:06 PM
my AR is already SBR.
I'm thinking maybe 11.5" barrel .
If you go SBR go 10 inch or shorter. This caliber lends itself very well to SBR. Many people are even going 8 inches. If you go SBR, go short.
Helen Keller
06-29-2012, 12:20 AM
I just might jump on this.
Have enough 5.56 brass I can swim in it .
From reading it doesnt have the resizing issues 7mm TCU has.
Gonna do some Barrel shopping and order me a set of dies tomorrow.
:hyper:
nfa1934
06-29-2012, 04:44 AM
Mine is 8".
http://i584.photobucket.com/albums/ss286/nfa1934/b812accd.jpg
Helen Keller
06-29-2012, 10:31 AM
Got me an A3 upper and a set of Lee dies.
:hyper:
now to ponder would it run better suppressed using subsonics using the DI or piston setup????
L1A1Rocker
06-29-2012, 11:14 AM
Got me an A3 upper and a set of Lee dies.
:hyper:
now to ponder would it run better suppressed using subsonics using the DI or piston setup????
If your goal for a piston set up is to run a cleaner gun don't bother. With a silencer the DI AND the piston system get equally dirty.
On edit: Palmetto State Armory has some great barrels at a great price.
Helen Keller
06-29-2012, 11:15 AM
If your goal for a piston set up is to run a cleaner gun don't bother. With a silencer the DI AND the piston system get equally dirty.
only goal is which mode would make it run more consistently?
L1A1Rocker
06-29-2012, 11:17 AM
only goal is which mode would make it run more consistently?
I don't think it's going to matter one way or the other.
For the money you may want to look at Palmetto State Armory, great barrels at a great price.
Helen Keller
06-29-2012, 11:25 AM
Cool, I'll check em out.
GOt this along with an RPD AR upper I'm making :shss:
Helen Keller
08-03-2012, 05:52 PM
This little project should be done within the next 2 weeks.
Just need to find a nice hand guard setup for my 8" barrel .
Helen Keller
08-20-2012, 02:57 PM
had some setbacks ( barrel came in wrong, new one on the way)
BUT I'll be all done by Sept 1st.
Making brass is a chore BUT I have so much laying about it would be pointless to spend more $$ on new stuff.
( part of the hobby)
Here's a good deal on brass If you dont have the time or a power trimmer or a drill attached to a lyman. :D
http://www.rvow.com/server/index.php/brass
videodon
08-20-2012, 07:13 PM
FYI, I'm waiting on paperwork for this can...
http://www.huntertownarms.com/k762ak.php
It's overbored for 9mm and runs 300 Blackout...sweet!
:)
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