Originally Posted by BPreheim
Necking down the 45-70 to 30 cal would give you a 30x348 win P.O. Ackley did a lot of these in the improved version they make a very potent 30 cal lever gun
but a 45-70 class of lever action can't handle the chamber pressures that this round generates to make it a good round. The .450 is a little stronger action wise, but will still be way down in ability to handles these kind of pressures. Best bet would be a .356 Marlin necked down to .338 or simply rechamber a .336 into .338 Marlin (real odd ball case). A 30-30 Ackley improved might be worth a serious look even though your very limited to bullet styles. How about a 35 Remington necked down to .338 or even 30 caliber?