Hello all,
The title says it all..............
I found a .357 Magnum Chambered Barrel Blank from Numrich that was for a IMI Timberwolf pump action riffle ($27.00).
Barrel Blank, .357 Mag., 18-1/2", Chambered
Gauged the bore and it's within the specs of my other .357 SIG bores, same as all my 9 m.m.'s also.
The recoil spring assembly for the .40 S&W should also be compatible.
If not I think I can find a stiffer spring to fit and function well.
All I need to do is get it into a CNC lathe, might take a little while.
I'll keep you all posted.

My PC9 might end up as a .356 TSW if I get another 9 m.m./.357 Magnum barrel from Numrich.
But my Marlin Camp 9/.356 TSW Carbine is filling that role.

All my .356 TSW conversions that I have done could go back to the original 9 m.m. because I never sacrificed the 9 m.m. barrel.

Regards,
BMI