It's ALL about surface contact area. The "universal" vises- whether Grizzly, Viper, etc. do not utilize bushings which match barrel contours. Trying to pull a barrel with a lot of taper on the breech cylinder- which results in minimal actual contact with the barrel- is difficult if not impossible. If the barrel is getting trashed, or refinished, not as big a deal. If it's to be re-used, different story. Once a barrel spins in the vise (or bushing) you've damaged the finish. If you're not re-using the barrel, you may not even need a barrel vise, right? Bench vise with pipe jaws, shop press- anything that'll grip the f out the barrel so it can't spin. You can even change it up, and put the receiver in an external action wrench held in a bench vise, and just use a pipe wrench (guaranteed not to slip) on the barrel itself.I like that vise from Spear. Any one use inside action wrenches?
Pros?
Cons?
Agree on striking them I've had a few I had to hit the wrench with pretty hard with the 2" lead bar.My Viper vice does a fine job. Good advice above about proper use of internal and external action wrenches. Don't be afraid to strike the action wrench to remove a barrel. You're far less likely to spin the barrel vs a cheater bar.