[I cannot think of a name]

Try to find any ‘actual’ 10mm ammo. Most of what they pass as 10 is so downloaded that it's little better than .40.

Cooper intended the .10 to be equivalent to a .41 mag. If you can find any proper loadings, it is.

[Who is John Galt?]

Try to find any ‘actual’ 10mm ammo. Most of what they pass as 10 is so downloaded that it's little better than .40.
Cooper intended the .10 to be equivalent to a .41 mag. If you can find any proper loadings, it is.

Looking at factory loaded ammo, the 10mm is a lot closer to .357 Magnum than it is to .41 Magnum. I think a lot of the guys who carry 10mm in bear country, do it simply because they like auto pistols...