Hey, you have any pet loads for that? I have a new (to me) Contender w/30.30 barrel and I need to dial it in this spring.
Also, I wonder if the old Contender frame can handle .454 Casull loads. I would love to have a .45 barrel reamed for that.
The Contender frame will handle for .454 Casull just fine, but I would recommend buying a barrel made and tested for that cartridge. The top pressure is 60,000 CUP. Much higher than the 45 Colt. The 460 Magnum barrel on the Encore has an even higher rating. I would not risk my life with a chamber reaming job on the 45 Colt. Barrels are relatively inexpensive at MidwayUSA or Natchez.