Just buy a collet puller and dismiss the destructive testing experts. $40 and you have a tool for the next screw up. I bought one a long long time ago and have used it at least a dozen times on every cartridge I shoot and a few more. I even tore down a bunch 308 rounds a guy at the range gave me because his AR wouldn't ignite the hand loads.
I've always bought the right tool for the job and used it way more than I thought I would.
But then I'm a tool junkie.
