Can some one give me a good comparison between these 2 rifles? Will they both shot the same conical bullet? I want to get one of these, but I don't want to mold my own bullets. I've read that the specialized .451 bullets purchased at muzzleloading-bullets.com work great in the Mortimer Witworth and the price for 50 is very reasonable. Will these bullets also work in the Gibbs also? Thank you in advance!