Hello Lanchaster,

Thanks for the reply.

And thank you for all the information. I've determined that this rifle is chambered for the 11.6x65R cartridge.

It took a little effort to re-work some 450-400 cases, but I'm now ready to go to the range for a test run. That is if enough snow melts to get down range.

My starting load is 30.0g AR5744 with a 350g Speer Flat Point - expected velocity is 1400 fps. This is basically a "low pressure" duplicate of the 45-70 Trapdoor Springfield load. It should be a good starting point to fire-form cases and check velocity.