Thinking that the small alloy frame guns might be weaker, I just finished "flipping" my 642 about 100 times, half with the cylinder loaded, half with it empty. Nothing broke, nothing bent. A range rod shows no misalignment of the barrel and cylinder. So again, I don't claim that "flipping" is good, but I will take with a very large grain of salt the claims of your LGS.
FWIW, the only revolver I ever had to fix because of a bent crane was due to "flipping" - "flipping" the gun across the head of a miscreant who became somewhat unruly when a police officer tried to restrain him. That gun was a Colt. I advised the officer to use his baton or blackjack in the future.
Jim
FWIW, the only revolver I ever had to fix because of a bent crane was due to "flipping" - "flipping" the gun across the head of a miscreant who became somewhat unruly when a police officer tried to restrain him. That gun was a Colt. I advised the officer to use his baton or blackjack in the future.
Jim