l would switch powders if you can, l have never had a magnum round like imr 4350. l think that it burns a bit to fast. l think that hammer bullets will ship 15 or so bullets just to try so you don't have the whole box laying around. also have you tried tweaking your oal... when l start building a load l start with 1 charge of powder with 4 messurments starting .005 off the lands then graduating to .040, .080, then .120 has worked very well for me. lt depends on what you are hunting but if it is just whitetail deer, l would not look at harder bullets like the all coppers, interbonds, or even the barnes, they tend to just punch through without expanding.