You might have to use different bullets. Round nose in a tube magazine are not a great idea, but most people know that round nose bullets are pretty useless for anything, and don't load 'em. Some levers don't like SWCs. My Rossi 92 doesn't have a problem feeding them, but I've heard of it. I use RNFPs in all my 45 Colts not. http://cgi.ebay.com/Lee-45-cal-255-G...-/150544205647
Round enough nose to not cause any feeding problems, and large enough meplat to put a hurt on whatever it hits.
The 92 rifle will handle anything you can dream up for a Ruger.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.