Alright, first off, this is the first time I've had time to sit down and practice and learn the powder with patched round ball. I've never shot the JSG SP for accuracy until today. I've shot a lot of the APP brand but this was new to me. I previously sighted in my CVA Accura V2 with it, but that was with conicals, not patched round balls.
Today I started off at 50 yards just until I settle in and learn more about it. I cleaned the bore free of oil and loaded up 80gr JSG SP, .015" patch lubed with my patch lube and a home cast .570" round ball.
I did swab between shots with a SLIGHTLY damp patch. This stuff is actually cleaner than their other powders it seems. I had one no fire due to having to much solution but it fired perfectly once I removed the nipple and dribbled a little powder into the drum.
No hard loading on the ball, just pushed down on the end of the range rod while ramming the ball home and that was it. No hard seating pressure this time.
First shot was high on a freshly clean bore, shots 2 and 3 were perfect.
I was very happy with that and so I grabbed some 90gr charges and loaded up. The far left shot I called. I felt myself shaking with the cold evening and so I kind of blew that one. One thing I did notice. The 90gr charge was blowing the thin .015" patch in half. I feel that once I start to experiment with the .018" and .020" patches, things will go a lot better with the heavier charges.
I'm going to reload my stuff tonight and get it ready for tomorrow. I want to experiment with no swabbing and see how that does and then I'll move onto seating the ball heavy on the charge. Down the road, I'll play with my thicker patches as well and do it all over again.
I am not shooting for tiny little holes, but more for reasonable hunting accuracy until I learn things about this powder.
It does go off instantly though. I shot some through my 1860 Army .44cal revolver and the #10 cap had no problems setting it off, plus the cylinder is super clean as well. I plan on doing a lot of shooting with the revolver and shotgun this fall/winter.