. . . the 7x61 S&H cartridge appears to have a double-radius shoulder much like the 7mm Weatherby cartridge.
Negative on that . . . (confirmed by drawings in an older Horny Manual and Ken Howell's Custom Cartridges book)
Hi all,
Just as a matter of interest, the suggestion of the S&L having a double radius shoulder may come about due to the fact that back in the early days before he started making the Mk5 action, Roy Weatherby used the S&L action chambering his cartridges . . unless I'm sadly mistaken!
Cheers, Jack