I call excess recoil dwelling in ‘the stupid zone’.
I find that I can tolerate level 2 stupid in my own acts of recreational stupidity.
The chart reads left to right - caliber and load - weight of gun - felt recoil in foot pounds.
You’ll note that the absurd 4 bore with its 115gr of bluedot at 1480fps using a 2000gr bullet in a 25lb gun only puts 133lbs of felt recoil! Ironically, the .577NE and .600NE are also painfully stupid to one’s shoulder!
The “it gun” these days is the 450/400 NE for double rifles and the .404 Jeffery, its ballistic twin, in the magazine rifle configuration. 51 lbs of recoil is quite low when shot off shooting sticks, about what a 20 gauge slug or a 3.5” 12 gauge waterfowl load produces. That’s the charm... it’s only “level 1 recoil stupid” and will kill everything you wish to hunt on planet earth, but it truly is “just right” or thought as ideal for Buffalo. Because I like the push versus whack of the 470 versus the 500, and better penetration ever so slightly, and less recoil ever so slightly, I top out with my 470 on what I’m willing to shoot. Consider me “level 2 stupid” according to my shoulder!
My humorous rant was meant to illustrate just how effective of a double rifle you can obtain with how little recoil by selecting the 450-400. If you buy a modern one, get the 20 gauge barrels as well and you can shoot it a ton on clays so you can practice less with the rifle load. Off of bipod shooting sticks where you can sway, and with a good recoil pad installed, this is doable with your shoulder condition. It’s 25% more recoil than a 375h&h....you can do it!
.450/.400-3" (400 at 2150)
9.0
51.
.470 N.E. (500 at 2150)
11.0
69.
.500 N.E. (570 at 2150)
12.0
74.
.577 N.E. (750 at 2050)
12.0
127.
.600 N.E. (900 at 1950)
12.0
154.
4 Bore (2000 at 1480)
25 .0
133.