Originally Posted by
jmart
Regarding ammo, Mk262, M855 and XM193 are NATO-pressure level, so those loads should work hand-in-glove with the .063 sized port. But they beat the crap out of BMs/RRAs since they run larger ports.
Wolf is down on the pressure scale and it may have problems with these ports, but because BM/RRA/et al drill their ports larger, this ammo will work in those barrels.
Where does other ammo fall in line pressure wise? BH ball, Win White Box, Amer Eagle, TAP? Are those loaded to SAAMI spec, in which case that would be a better match for a BM/RRA than a NATO-spec load?