40X
Dan pederson did a barrel for me also, on my Manlicher Schoenauer project. Its a 10 twist 7mm that shoots a lot of different cast bullets into the same hole.
Joe I have two 310 BSA recievers I put on a barrel stub and drilled them for the cleaning rod and also made a threaded pin for the innards like on my 12/15. I think martinies are fun. One in 30/30 Wesson and the other a 222 rimmed.
Tom