I have several rifles, also:

.500 Alaskan in a bolt rifle.[.532 rebated rim, head spaces off mouth]

.500x1.8" Alaskan in a Ruger #3

410 Express, 40-90 Sharps with a .416 bore. Ruger #3.....the 3.1/4" case is impressive.

Get close and wack em hard!