Barrel Clamp vs. Action Clamp?

[Bowhunter57]

I've watched some videos of a few barrel changes and some use a barrel clamp, while others use an action wrench/clamp. Both appear to get the same job done.
Barrel Vice: http://www.youtube.com/watch?v=ANK9KbXmMr4
Action Vice: http://www.youtube.com/watch?v=UPlFtskCwng

Are there reason(s) for the different methods or is this pure preference?

Thank you, Bowhunter57

 

[FredT]

Most barrels are round, not all. Most actions are round, not all. Your vidios show two ways to handle a similar operation.

I have an M1 barrelling tool and wrench that is made just for the M1s. Very fast to use. It will not work on round bbls and round actions. No bolts to tighten down.