Home Forums Hunting & Shooting AR and Tactical Rifles Gas

I spent a lot of time shooting an 11.5" SBRd Colt and it was brutal. Some of it I'm sure was muzzle blast, but the actual "recoil" of it was ridiculous (considering what it was anyway). I remember thinking, "I thought this was just a little .223."

Compared to longer guns, especially those that are set up right, that 11.5" was just violent.

I played with one some years ago, and that's kind of what I remember about it, it was a handful.

The one I shot just had a standard A2 flash suppressor on the 11.5" bbl. It was LOUD.

I've never experienced some of these shorter 7-ish" pistols. They must be pretty obnoxious.

Shane-I suspected that the gas ports were probably opened on those 11.5" barrels to compensate for the substantially shorter dwell time. Since the bolt won't get gas for very long, it's gotta get a lot of gas and get moving pretty fast.

Some googling revealed that the port on an 11.5" barrel is 50% larger than on a 16" barrel (from Colt).

So it's still a carbine length, but it's definitely getting more pressure than the other carbine barrels.

That makes sense.

I've never heard of the longer flash hiders being better either. Just longer so they're legal.

So how many SBR's you have experience with?

The real deal XM177's had a "sound moderator" on it. The fakes to be legal are stupid since you brought up the extra gas required and the velocity loss.

There is an interesting story behind the XM177 and the sound moderator. It involved A POW camp in Vietnam, intentionally crash landing a helo and payback. I'll see if I can dig up a link.

Can't come up with anything right now but it was at Sun Tay and the reason for the moderator was to bring the noise level down to regular M16 levels so no one would know SF were in the area.

I've never owned or shot an SBR if your definition is strictly NFA guns. How much money do you have in the bank?

10-4 will try to shoot it again on Sunday.

After reading and watching that brass vs. steel ammunition.

http://www.luckygunner.com/labs/brass-vs-steel-cased-ammo/#dirtiest

it makes you realize how rugged the platform really is. I mean bushmasters of all things to 10,000 rounds with cheap steel cased ammunition. They shot those guns with no extractor replacements or spring replacements, minimal cleaning and commented on the replacements at 2500 and 5000.

All the sitting in the easy chair and pondering and proclaiming you must have an FAL or an M1 or a piston gun, wow.

What well documented test. Thanks for sharing that.

Jimmy, I own the Big 3 platforms, AR, AK, FN.

Hands down, the AR has given me the fewest problems. The contrast between it an the other two platforms is so stark it's not even a contest. Runner for trouble free is actually the SKS.

I had one of the springfield arms Imbel FAL's with the from the factory bipod on it, a bunch of magazines, and a bunch of surplus ammo from where I forget. The gun shot just fine was much more accurate than an Ak and never had a problem. It was just heavy. The scope mount I got with the gun was a dust cover with a rail on it, sort of funny that.

I just got rid of my last AK, a great gun worked on by Chris Butler in Florida. You were never afraid to do a mag dump in it because even if you burned the barrel up it would shoot no worse. It shot thru a bit thicker sapling than a 55 grain ball bullet from a 223 so there was that. In the end I just don't like AK ergonomics.

So I sold it and replaced with a Smith MP10 which has been a lot of fun, easy to shoot, accurate, and only 10 3/4 pounds with a load of 20 rounds in it.

Guns that don't work for me go down the road pretty quick.

Today I shot a coyote running away from me with the Fauxneske and was thinking how nice it was to be able to keep the coyote in the scope while I watched him tip end over end. I was using the VX6 1-6 on 6 power and hit him about 175 yards away.

The H2 buffer works great on the Noveske mid length but this was the first time I've really noticed how smooth it shot. I also love the Geisselle trigger.

That my friend is a Zen moment.

Bump for IronEagle.

good thread, will bookmark it.

Recently I've also read about using the heavier M16 style bolt carriers as another method of smoothing out a system.

Anyone experimented with the differences the shaved AR15 style and M16 style carriers or have a preference for one or the other and how they effect the system?

Just wanted to add this info origionally posted
by jimmyp