Commercial grade rifles geared towards the occasional shooter like the Stag are often referred too as over gassed because they leave the factory set up with expectation most of the owners will shoot lower powered target ammo. Regardless of gas port size (Bushmaster claims spec as well but MANY measure out much larger), a bump to at least an H buffer might be a good idea.
My 1/7 rifles, which include BCM, Colt 6720, LMT 10.5" and both KAC SR15's all shoot 55gr m193 for 10 rounds at 100 yards with an Aimpoint and 3x or ACOG TA31 between 2 and 3.5 moa, depending on rifle and variances in ammo.
62gr can be very accurate in 1/7 twist rifles. On the other side, I've fired a lot of 77gr back in the day when I had 1/9 barrels. Worked fine. I don't know why anyone would "want" to be running a 1/9 if they shoot a 1/9 barrel. It'll be fine, but not better and that pretty much applies to 55gr as well. I'd rather loose the ability to shoot 45gr ammo by running a 1/7 than running a 1/9 and run the risk of giving up the ability to run the 70gr TSX.
It's length, not weight that affects stability. The 70gr TSX is longer than most 77gr bullets. 50gr and 70gr TSX is my choice for defensive use and hog/coyote hunting, so that may not apply to everyone. 75gr TAP 5.56 is my other choice for a defensive round, but at those distances, stability is not a major issue.
Last edited by jonconsiglio; 08-26-12 at 14:35.
Proven combat techniques may not be flashy and may require a bit more physical effort on the part of the shooter. Further, they may not win competition matches, but they will help ensure your survival in a shooting or gunfight on the street. ~ Paul Howe
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