I tried some 1Fg in my 20 gauge flintlock trade gun. It was Graff & Sons powder, and I used 80 grains and an ounce of shot. I used 3Fg...
Experimentation/actual experience beats conjecture every time. Thanks for the report and having the courage to try something new!!
Buy it and send to Ruger, to get a new cylinder, no further issues with both.
Most Ruger Single Six cylinders are interchangeable; a drop in fit. Most. Not all. But most.
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