400 yards? With an AR?

[rdremsek]

I can't find any marking on the upper other than a capital A ~1.5" in front of the charging handle. That's on the Troy upper. The BCM rifle is marked 5.56 NATO on the frame on the mag well. I didn't check the barrel as it was a complete BCM rifle. I've emailed BCM with the S/N and asked for info on specs. I've done the same with Troy although I have nothing to give them so I'm sure it is hopeless. I'll have to try the rod and brush for twist rate.

My thought was just that. Go to the 25M with my 10/22 on order and after that try some of it with the AR. I know it will be more than the 10/22 but my recollection of my one time shooting an AR was it wasn't at all unpleasant to shoot. But that was 50 years ago at Fort Hood.

Check right behind the flash hider on the barrel the twist should be there

 

[RegionRat]

Check right behind the flash hider on the barrel the twist should be there

See post #31. He is 1:7

 

[Andy Legg]

Lets see if the link works.
https://palmettostatearmory.com/amm...r_multi_v2=5.56x45mm&manufacturer_v2=AAC+Ammo

The 77 OTM is pretty good stuff.

 

[jlshaw]

If you can see a 6” black bullseye at 100 you will see the ones at longer range too. The targets you shoot with irons at distance should be scaled to the black bull looks the same at all distances. A 6” black at 100 yards looks the same as a 36” black at 600 yards, or an 18” black at 300.

100% true.
I have used irons at distances from 50 to 1000 yards. The aiming black scales so that the bull looks the same at all the various distances.