...I found that the repeated impact on my shoulder from 50 rounds of high-brass slugs had rendered my right arm almost useless....
In addition to a saw, you might want to purchace a membership to your local gym!
Thanks for the great idea. I checked, they don't have a shotgun range.
You actually checked your local gym for a shotgun range?
Saws are great little bits of gear when an axe can't be used. I usually take a gerber folding saw while hunting. The advantage is being able to cut a limb above your head whilst holding it with the other hand. Never tried a swede saw yet, but I am sure they just as good.