I have a Gibbs Farquharson action #178 that has been rebarrelled to 45-70. I have been in contact with a couple guys (one is Glenn Fewless I see on this site too). It is a MBL missing the original forend and side safety lever. I think I can make the safety lever and get the replacement forend to look good but it will need to be checkered to match the butt, The question I'm struggling with is the barrel, It is very nice and well done but not original, It would probably be expensive to replace with a new .461 Gibbs and harder to shoot/load but is the 45-70 the way to go or 45-100? or what? What would be the best choice? any ideas? arguments for or against any one caliber in particular? Thank you