Tried Weaver first time.

[Gunmaster45]

Originally Posted by FIVETWOSEVEN

If my cheap FM90 can take dry fire, your 4506 can handle it. I have a 645 and its fine with it.

Any firing pin can take dry firing. It's just the matter that eventually it won't, and you can't predict that. When the firing pin is struck by the hammer and doesn't impact a primer, it vibrates in place and absorbs the hammer blow. Over time this can cause it to crack.

If snap caps aren't within one's personal budget, use spent shells (they can take about 50 or so hits before the primer is too dented to do anything) or make a couple dummy rounds using a bullet puller or impact remover hammer (you fit the bullet inside it, smack it on a hard surface, and the inertia pulls the bullet head without setting off the round), dump the powder, fire the primer off, and reinsert the bullet head with a vice and some super-glue. If snap caps and store bought dummy rounds are so expensive today, making use of regular ammo probably wouldn't hurt.