There is wisdom in those words. I can understand the need the guide had for his 500. He is young, I am guessig in his early 30's, amd in great shape. Shooting at a life size bear target at 15 yards he could rapidly empty the 500. Think shooting full 357mag loads as fast as you can for the mortals among us to get an idea how fast he shot the gun. What impressed me most was the fact he shot about 100 rounds of practice that day. He told me he does it once ot twice each spring and fall.
I am just starting to get joint pain in a few fingers and nothing in my wrists but I have no desire to beat myself up with heavy duty 44mag or 45 Colt loads. I do carry my Ruger 45Colt in the bush and do so with 8.5 gr of Unique under my 260 gr LSWC bullets or my 1911 with 45-08 cartridges. That is enough for anything I am likely to run into at short range. They both partner a Mossberg 12 gauge loaded with slugs.
Take Care
Bob