The manual on my Super Redhawk says it will NOT hurt the gun, my Taurus 605 says it will.I have never dry fired any reinforce because I have seen the damage to he firing pin and chamber mouth that can resul
I have seen a Ruger Blackhawk who's transfer bar broke before more Han a couple of boxes of ammo were fired but was heavily dry fired. It sign t not have been the cause but it no doubt accelerated it.
CZ advises not to in the 75 models due to the roll pin that acts as a firing pin limiter. They go far enough to include snap caps with their pistols so I tend to think they are serious.
I figure snap caps are cheap insurance anyway.
I don't blindly believe anything I read, a guy bought a .357 and the manual stated not to fire 38+P in it, he swore the +P were more powerful than mags untill mhe realised that they had put a .38spl booklet in with his .357 at the factoryIf the factory says it will, why would you doubt it ?