7.5" ar accuracy expectations.

[Showcase]

Recently finished my 7.5" PDW build. Here is the parts list:

DPMS lower
Dlask lpk
Badger ordinance safety
MOE grip
Gen 2 pmag
Magpul trigger guard
MOE stock
DPMS mil buffertube
Carbine spring
Stag arms H2 buffer
Aero precision upper
DPMS mil charging handle
Stag arms M16 BCG
NEA 7.5" barrel
NEA gas block
NEA pistol length gas tube
Troy/ Viking tactics hand guard
Allen gun works 5 prong flash hider
MBUS sights.

I'm getting consistent 3" groups at 40 yards with iron sights on a rest with American eagle 62gr .223. Is this considered good, bad, or average? The trigger is a dlask single stage. It's a long, stiff pull at about 9lbs. Anything I can do to get the groups tighter? Or is it not realy possible? Thnx!

 

[DOOK]

Twist rate?

 

[Showcase]

1:7

 

[cr5]

My 6.5 inch upper would do under 2 inches at 100 yards with good ammo and a 2-7 Burris scope.
Short doesn't effect accuracy negatively, it only sacrifices muzzle velocity which makes you compensate more when shooting longer distances.
Unless you like headaches I strongly suggest a linear comp instead of a brake. You may be ok with a 5 prong but with a barrel that short it's best to push that concussion blast downrange as much as possible.

 

[Showcase]

Sorry I didn't take pics at the range.

 

[JR Hartman]

9 lbs trigger aint helping group sizes one bit. I'd have a look at that.

 

[Smcx]

###y.

 

[cr5]

Try different ammo and maybe have a smith knock that trigger down to 5-6 pounds. It's not a target rifle so don't go too low. I personally prefer a two stage in my AR's but as long as you are comfortable with it you should be fine.

Since you are in Edmonton you are in luck, go to Tier One Armoury and grab some of their Black Hills Match ammo, that's the stuff I was using when mine printed under two inches at 100yds. They also have some really nice triggers for very good prices if you want to try something else.

 

[Showcase]

Tier one is awesome. I was thinking about picking up a Giessele 2 stage from them. Unless anyone recommends a different 2 stage?

 

[Suputin]

Prob the biggest issue with irons is the target itself. You need something that you can clearly see the sights against and that is neither too big nor too small. Shooting small groups with irons is def an art.

 

[8 ball]

With a decent optic, decent barrel and decent ammo it should be around the 1 to 2" range. As has been stated above the barrel length has little to do with accuracy, more to do with velocity. Nice looking rig!

 

[ShrtRnd]

Nice looking rig!

+1
Even better if you eventually add in a KX3/5 on the end of that barrel.