I don't have much trouble with my handguns, and I do have tendonitis in both elbows, as a result of using calipers to measure wood in a sawmill every day for a number of years. I know what it's like not to be able to pick up a coffee cup, or for that matter a pencil, or to move a mouse around. I have some bands that I wear below my elbow that offer some relief, and MUST wear it when I go fishing or shooting the handguns.
I did find out that the handloads I loaded up for my son's .480 Ruger, while not the heaviest loads available, got my attention real quick. I could manage about 40 rounds before I had to put it down. I also was able to shoot 100 rounds of fairly stout .45Colt loads in the same session.
Afterwards I took 3 tylenols and 4 Advils. :oops: