.41-magnum roll crimp die on 10mm case?

[Jtarm]

I’ve been corresponding with Tom Gibson of Accurate Molds on getting the best accuracy from one of his 10mm revolver molds designed for the GP100, which he also shoots & loads.

Tom says he’s running a .41-magnum roll crimp die.

Before I run out & buy one, I was hoping to get corroboration as to whether this will work.

[Tall]

I don't see any issue with this idea. Except he means 41 Short Colt I believe. You would need to use the 41 revolver roll crimp die from Old West bullet molds.

https://oldwestbulletmoulds.com/shop/ols/products/41-long-and-short-colt-heel-seated-crimp-die

[Texas by God]

The .41 has a longer case than the 10 mm.
So it seems like it won’t work to me.


Sent from my iPhone using Tapatalk

[Tall]

The 41 Magnum has a longer case and a bigger bullet diameter. The Old West crimping tool works both on 41 Long Colt and 41 Short Colt cases. A 41 Short Colt case is .637" long.

10MM cases are .992" long. Bullet diameter is the same as 41 Long Colt and 41 Short Colt at .405".

I would say the tool from Old West is the one to use.

[challenger_i]

10mm revolver? Use a trimmed-down 38-40 seating die, with the seating stem removed.