This was a .320 european gun i fired 3 shots with them, not a RF. And bullet wont work well since its a .312 not 317 but it goes boom. So its good enough
I did not make up a load. Bought the factory rounds at gun show. I am still working on finding a load for this gun since i have some brass. I would like to locate the dies for it. I will use trailboss powder. I estimate about 1-1.5 gn and 312-314 bullet.