After following the thread about the failure of cast lead projectiles in the Winchester Model 94 Big Bore in .356 Win that my wife has been using for years for deer hunting, I am going to move her up to a Browning 1885 in 45-70, but don't have much time left to develop loads before deer season. I have two RCBS molds for this round. Both of them gas checked with one a 300 grain and the other one a 500 grain. Both of them flat nosed for good deer killing power. So, which one would give her good deer killing power and a couple of hundred yard range? She sometimes sits out on the front porch and shoots the deer down the hill in front of the house out into the soy bean fields.