I have a 50cal Hawken and a 50cal Renegade. The Hawken barrel is a bit looser than the renegade. The GP bullet fits the Hawken a bit easier, but the Renegade is real chore. I almost made a post about this last night after yesterdays range session. I have to really smack my short starter to get that last band to engrave. I mean, smack it with all I have, short of using a mallet. It’s real tough. 1 out of 4 gets mangled in the process, even though I’m careful of how I position the short starter. (Not good if you need a fast follow up). They don’t shoot very well from either of my rifles - 4-5” 100 yard groups using a 54cal OP Wad. I really wanted these to work, but they aren’t real reliable in my rifles. I used them in a Lyman GP hunter fast twist and they shot clover leafs all day long (should have kept that rifle). I bought some hand cast Maxi-balls from a well-known retailer that shoot 2” 100yrd groups that are so loose, they are almost slip fit. Last band very lightly engraved the rifling, so light that I can seat them with my thumb and follow up with the tan rod, not short starter needed. Makes me a bit nervous to hunt with those. I think I’m going to buy the necessary equipment and cast my own REAL bullets.
Anyway, you won’t know how they are going to fit your your rifle, or shoot in your rifle, until you try them. I just bought them for $11 a box so it’s not a huge loss if you decide you don’t like them.