Rechambering from 45/60 to 45/75

[Black River Smith]

I read or heard that it is possible to recut a 45/60 chamber to 45/75 without any undo issues.

I found Hobie's chamber measurements for the 45/75 but cannot find a drawing for the 45/60.  I did find the Chappy cartridge measurements off the Marstar website.  I did a google search for 'chamber measurements of 45/60' but found nothing.

Does someone know that this can definitely be done or has actually done this already?  Does someone have a chamber drawing for the 45/60 so that I could then compare both measrurements?

Someone of another posting talked about having an original 45/60 but would really like to have a 45/75 cartridge instead.  Well, I would also be interested in knowing if this could be done but on a Chappy (45/60 is easier to load but 45/75 was the original chambering).  I know the other person probably does not want to cut an original barrel but if possible.....who knows.

Thanks

[dusty texian]

I dont see any reason it would not work, BRS . The only thing is the reamer would start cutting before the pilot enters the bore as a bore guide . Should not be a problem with perfect alignment and a rigid set-up , just dont crowd the reamer and go slow. Would not doubt that this has been done more than once. ,,,DT

[Black River Smith]

Dusty,
Thanks for your reply and the practical knowledge advice.  That is something I do not have for a project like this.

BRS