My first double rifle was in 11.15 X 60R, 25 years ago.. It took me 6 months, 2 bullet molds and a few pounds of black powder before I got it regulated. I either give that rifle the credit, or blame, for my Phd in hand loading. I had to duplex the load to 5% SR-4759 but that did it. It's from the 1870's, is an E. Goldmann in Erfurt and is full coverage engraved. I killed one deer with it and it was as effective as the 45-70.
I have it shooting between 2 and 3 inches at 50 yards and for a 150 year old rifle with one barrel worn more than the other and with a few pits, I'll take it.
Good cartridge, good luck with it.
