Lots of folks get down on APP and JSGbecause theydo notspend the time to makethe powder work for them. With APP you have to weigh the charges because of the varying size of the powder granules. With JSG allthe granules are about the samesize and weighing is not necessary, although somefolks do it: Started doing it myself thisfall. Not sure what the standard deviation is with 120 weighed grains of JSG: However is cannot be much, because my Encore makes consistent 1.5 inch groups with that load and the 250 grain SST in the tight fitting black sabot at 100 yards.

1.JSG likes a very tight fitting sabot.
2. Youhave to really lean on the ramrod and compress the JSG. If your rammingis not heavy enough and/or is not consistentyour group will suffer.