Mickey,

The ones I have seen done were all in .577 I do not know how they will hold up long term but this seams the common conversion. I belive a member on this site has one converted to .577 as has been alluded to in the past. This is yet another I have had in the back of my mind for a while. I want that charge stopper I have no use for

of course only if a gun bearer will carry it.

James F. Nixon III