25-20 ammo

[Rotaxpower]

No. Newbie here, not sure how to do that.

http://leeprecision.com/universal-case-expanding-die.html

Get one of these, they usually work better than a chamfer tool.

 

[Paatz]

http://leeprecision.com/universal-case-expanding-die.html

Get one of these, they usually work better than a chamfer tool.

Oh that's cool, thanks!
I have a chamfer tool for boattails, and I did try a couple like that, but it doesn't seem like quite the right solution.