I have been using my 45-70 contender for years. I have found any 300 grain factory hollow point works fine. I don't recommend the Remington hp because they blow up on impact because they are soft. The 45-70 is a real deer hammer. I like it so much I have two barrels. One with scope and one without. Good luck you won't be disappointed with it. You will get a few strange looks at the range when you turn that cannon loose.
I just started reloading my 45-70 in the last few months. One word of caution. The hornady brass used for the leverevolution rounds are short and I could not get a crimp on them. I loaded some barnes TSX 250 grain bullets and wow what a mushroom. I will post a before and after picture later.
Last edited by DeerDad; 05/19/2013 1:18 AM. Reason: Add load data