Hello,

I have a Berdan rifle II, in the original .42 Russianicon (10.75x58R.)

I don't reload, nor do I plan on doing so any time soon.

What I would like, is to make a sleeve to shoot another caliber in the meantime.
I shoot .45 LC from my Martini's etc.

It has a bullet diameter of .430, and I was wondering if a sleeve could be made for any other caliber.

I was thinking of 44-40. It has a bullet diameter of .427. So if a sleeve could be made, it's a very viable cartridge, that is still readily available.

Any thoughts would be appreciated.

Thanks
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