I have a Yugo sks that likes to bite my trigger finger on the safety lever. I use gloves or move my hand back abit to avoid that, my Chinese and Russian SKS rifles do not hurt me like that.
On the Ruger revolvers you might want to change your hand position, or shoot them single action. I have a GP 100 that has never caused a problem, but I only shoot my double action revolvers in a single action mode, it is a habit and helps the accuracy as well. You might also want to check
Brownells and see if there is an aftermarket trigger that you can install, they have lots of stuff, and the Rugers are popular too.