Hi,
I've just got an old .36 Navy Colt (1851) from a deceased member of our club.
It's marked 'Made in Italy' & G.U. A bit of research tells me this is Gregorelli and Uberti who were in partnership around 1959-62 until Uberti set up on his own.
It's a brass frame and in quite reasonable order.

Any suggestions as to ball size? I gather most like .375 but I've also read that recent Ubertis find those a bit loose and like .380. I wonder if that is true of one this old?

Suggested loads are around 18gr but I'll be using 777 so I guess a bit less than that - especially with a brass frame. 15gr sound reasonable??

Any thoughts or suggestions?

Thanks

Steve