I deformed a pal's RCBS kinetic puller by dismounting hundreds of loaded up(yes,my dum) 357's...it works flawlessly on everything I have tried to dismount and I can re use the components.
I bought him a new one and still use the deformed one,rifle,pistol,one,200 ,it's all the same.
If hitting it on the floor sucks,use a 2x4.Just hit it hard enough to do it in one blow.
I had to undo 400 45 ACP rounds once. Used a rcbs kinetic puller to do it. Yes it took a while!