50-90 groove diameter?

[only1asterisk]

Anybody slug one of the Winchester/Miroku barrels?

[NickSS]

I have not done so but most new barrels are around .510" at least my C Sharps 1874 is and a friends 50-90 Shiloh sharps as well.

[only1asterisk]

I've got an email out to Badger to make sure.