I still had trouble with that first post. I think a couple words went AWOL.
Anyhow so far my 464 likes Hornaday American Whitetails, and Lever revolution .
Remington Cor Lokt & Winchester Super-X not as well. Federals not good & Fusions would hardly cycle at all.
I find the shortest rounds fed the best and longer ones would lock up the gun.
The hammer action doesn't "break over" on this gun so there's lots of friction between hammer and bolt, and bolt to receiver, when the hammer gets cocked.