i need .5 because it sucks having a gun that aint accurate. i shoot a lot of long range and have rifles that shoot extremly accurate and i want this one to do the same if it is capable. If the gun will do it then i will do it. I will not be the problem. Why would anybody want a gun that won't reach it's full potential. that makes no sense to me. I don't need shooting advice i need barrel advice. i'm new to the ar world but not to the long range accuracy world.
Okay, you're gonna play "long-range" with 220 grains at 1050fps? That is a 100yd cartridge, in case you ain't figured it out yet. With a 220gr SMK @1050fps with a 100yd zero, that bullet will drop TEN INCHES between 250yd and 275yd. With an angle of incidence on the target like that, ANY range estimation will likely result in a miss or a wound.
So, like I said earlier, a half-moa rifle, chambered in a short range round, is completely superflous. You could make a solid arguement for MOA, which most good AR's are capable of, but rejecting an AR barrel 'cause it ain't half-moa capable, chambered in a 100yd cartridge, is silly.
Terry Cross happens to know a wee-bit about LR shooting, he said that a one moa rifle will win any tactical rifle match in the country, if you'll do.
Anyway, you will need a 1 in 8 twist to stablize 220's and 240's, in case you didn't know.
