5.56: Fragmentation or Expansion?

[grizzman]

I don't plan to engage 2 legged critters at ranges in excess of 200 yards, so minimum velocity for expansion isn't something that concerns me personally. I'd rather be confident that the bullet will stay together at close range and through thin barriers, than that it'll expand in a situation that will likely never occur. I've got better performing rifles than the 5.56 AR for instances where long range defense may be required....time to go fondle a 19.25" M21DMR.

I load 62 grain Barnes TAC-Xs that have in excess of 2200 fps at 200 yards. My research indicates that these bullets need 1900 fps to expand.