Years back, I used to load a bunch of Sierra 125HP's for a friend while his son was growing up. Shot well enough and he even collested a couple deer with it. I had some lefty and shot them in a couple different rifles, accuracy was in the 2-3" range at 100.
I agree with Bob A, my 30-30's like longer bullets better, my pet loading is a 170 Hornady and a max load of W748 sparked by a CCI LR primer.
CW