Fouling wont be an issue while Im only using barnes in the field on game,cant afford to shoot them at paper/steel.Ill get these loaded up,check to make sure zero is the same right before antelope opens and then field test them.Thanx MTRifleman,I have looked at the MRX,price has kept me from getting them but if they offer them in the 8mm I will probably load up a box for elk,that is where the rubber meets the road in my book,elk.When a BT or CT blow up on a doe antelope/MD its not nearly as crucial as on an elk where failed penetration will most likley result in lost game or a very long haul out from a nasty hole.I have killed elk,deer,antelope,coyote,ect with the untippe TSX and I have never seen anything but perfect terminal performance,IMO they are not as accurate at long range as the poly tipped bullets and that is why I chose them for this years deer/antelope.Thanx for the info guys.