Are AR's the wave or just a fad to be the cool or tacticool guy? Either way they'AR fun! I went against my better judgment and ordered a 7-08 AR10 barrel. Better judgment being not a fan of that caliber, let along the cartridge. A friend of mine has been shooting this cartridge for decades and it's his go-to kill all cartridge. With a 6.5prc AR10 barrel on order it'll be interesting getting it to shoot. IF it works out, then I'll be ordering more short mag AR barrels. I will be subjected to 2.830ish on length which isn't a big deal. What cartridges do some of you have that are not a normal chambering in AR's (10's or 15's).