Yes agree we do get a bit lazy with age, but no problem with taking the rims down. I had a look to see if I had any rounds left from my days of shooting the 455 Webley, a 4" barreled MKVI, and discovered they were Federal cases I had used to make up from 45 Colt. Shown below are the loads I used, a 185gr Winchester FMJ, a 250gr Hornady HP and my own 250gr Cast. Did shoot a few feral goats, a couple of red deer and quite a few, rabbit, hare and opossum with my Webley mostly all with the accurate cast load.

Although a big heavy revolver my young step daughter and son, 9 and 6 years old at the time, used to enjoy shooting the Webley, with me holding their hands in mine to absorb some recoil of course. Great fun.