If he ever decides he wants to try a fullsize, revolver he should give Herrett's
a look. If they can fit a sixgun to this big Cajun, I expect they can take care of your friend.
Otherwise, he should simply go to the gun shop and handle autos until he finds something that works for him.
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence