Dave,
I understand the gun I own is not practical for me. However, I love the Hawken rifle and have since 1980. I try to keep it as close to the original as possible. I can shoot and hunt with the gun as is. Any weight I can get off the barrel will help me keep it shouldered a bit longer. Going to a .54 is strictly to make it legal for elk in my state. It seems foolish to do that though. My main goal is the lighten up the barrel and add some more knock down power. It won't cost a penny more to go to a .58 instead of a .54. I believe taking 3/4 lb off the barrel is something I can feel. I don't want to shorten it because the longer sighting plane helps me see the front sight better.
So, after more thought on this. I believe going to a .58 is my best choice. I'm aware the original Hawken was a 1-48 twist and that's what the gun is now. I don't mind staying with 1-48 as long a s it's a deep groove. It's not right now and i'm not sure what Pedersoli was thinking by using a shallow groove? They make a hunter version with a faster twist for conicals. So, mine was made for a PRB. Why the shallow groove.
Anyway, I talked with Bobby about the .54. I'll see what he recommends for a .58 twist. I don't plan on using heavy powder loads, so a faster twist seems like the hot tip.
Thanks for your posts.