I have temp custody of a marlin 1894 44 mag. I knew the gun had last shot about 50 rounds of commercial lead bullets handloaded with about 8.0 grains of unique, hell I was there. That was a year or two ago, the bore showed it was never cleaned. I swabbed it realized it was leaded fired one round jacketed ammo then cleaned nowthe bore looks good. I fired 10 rounds of my 250 grain rcbs keith bullets, it shot decent as far as groups but I did not get to clean it yet. Is it possible to shoot lead sized at .430 in a micro or would I have to buy a larger sizer die to get it to to shoot without leading. I wont be able to keep this gun as its a friends. I got to clean up after his house fire and store until he can get new place and safe to store it in. I figured I could use it as a test gun before I bought one. Any help apreciated. SN