Daryl, thankyou.

From what you say, i think the 12b is the one to go for,and i shall simply accept renovating it.

Also, -and though i do not mind the prospect of paying for loads to be made for the rifle- from what you say i should have it relined to say 577x3" given that this shell is far easier to get, due to its modern counterpart, along with its modern counterpart's bullets being viable too, no?

Daryl, you have mail.

Many thanks

Ben