I have a Kimber Ultra CDP II, 3" barrel in .45 ACP. It's so damn accurate that I can destroy the X-Ring out to 15 yards without any difficulty whatsoever.
Most accurate pistol I own. Better than my Glock 23, Colt 1911, S&W 686, Sig P220, and more.
I'm 60+ and have some vision problems too. I can't imagine a need for a more accurate gun than that unless I competed with it.
Just my two cents.
There are only two types of ships:
Submarines and Targets.