I'm looking for some suggestions on a load for a 45/70 Marlin Guide gun for hogs and deer. I'm looking at using a 300, 400 or 460 grain Cast Performance WFNGC bullet, but am also concerned with leading problems in the Marlin. Also would like to hear comments from anyone using Cast Performance bullets in this caliber, or suggestions for a good jacketed bullet. What bullet weight would be best?