01-26-2016, 07:12 PM
The short barrels are optimum with 1/7.5 twist, which is what AA discovered over years of testing, so all their 18" barrels and under use that twist.
If it was just hunting at normal ranges, I would tell you to get the 10.5" upper and throw a .30 cal can on it, but since you want to shoot out to 1000yds also, you are going to need more barrel length for that. 16" will just barely get you there at sea level. What part of Texas are you in? If you are in West Texas and can get into some higher elevations, you will get more supersonic reach due to thin air.
In the areas that are orange, a 14.5" with the 123gr Scenar factory load from AA will get you to 1025yds of supersonic reach. One thing I have noticed with the short barrels is that the tight twist keeps the bullet very stable at even distances past 1000yds for me, but I'm at much higher elevation as well.
A 14.5" with a TBAC Ultra 5 30 cal would be sick, and you could shoot that can on your 300 AAC as well.
![[Image: Texas-phys-k5-e.gif]](http://wak.infobaselearning.com/media/10607/Texas-phys-k5-e.gif)
If it was just hunting at normal ranges, I would tell you to get the 10.5" upper and throw a .30 cal can on it, but since you want to shoot out to 1000yds also, you are going to need more barrel length for that. 16" will just barely get you there at sea level. What part of Texas are you in? If you are in West Texas and can get into some higher elevations, you will get more supersonic reach due to thin air.
In the areas that are orange, a 14.5" with the 123gr Scenar factory load from AA will get you to 1025yds of supersonic reach. One thing I have noticed with the short barrels is that the tight twist keeps the bullet very stable at even distances past 1000yds for me, but I'm at much higher elevation as well.
A 14.5" with a TBAC Ultra 5 30 cal would be sick, and you could shoot that can on your 300 AAC as well.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com