That's the usual configuration for the bullet and I used the Lyman 4511112 now discontinued but 451114 seems to be identical.
Wipe between shots with lubed bullets or a build up of lube can occur at the breech and cake the grooves in the breech and accuracy
will be gone.Paper patched may be the best.Show us the inside of the lock.I know what I can do and Rolf in Norway with his left hand
versions
Bob Roller