Going to order a Barrett M82A1. I can't decide if I want the 20" or 29" barrel. Probably not gong to shoot it a while lot as the range nazis banned 50 cals at my local shooting range. Mainly just buying it to have as I'm thinking the gun grabbers will find a way to outlaw them in the near future. When I do shoot it I'd probably like to stretch it out just for fun. Does the 20" barrel really cut the nuts off a fifty?