Rey, when I got my 500max, I worked up some various loads and Chrono?d them then used the USPSA power factor measurement to determine my personal recoil threshold. 400 - 465gr bullets at 1000fps were easy shooting and accurate.
465?s at 1300fps we?re determined to be my comfort level,.....at the time. Now years later and probably a hundred or more rounds later, 450- 465gr bullets at 1300fps are my normal hunting loads, and I was astonished with how little they seemed to recoil when I had to replace my rear sight the other day and resight in.
Shooting my little 4? 500L, is actually fun and it?s super accurate for what it is. The 500max, is a 5 1/2? gun and probably weighs less than your gun, or very close to it, give it time and shoot some easy shooting 350 -400gr bullets at 1000fps and enjoy it.
Trapr