Mediocre accuracy, could be the nature of the beast. Don't have a Ruger but I have sent over 5K rounds down my backyard range through my CZ Scorpion carbine and after market trigger. Four different cast bullet deigns and at least a dozen different 9 mm friendly powders. All 10 shot groups from 60 yards, sitting with a tripod for a front rest. Red dot sight or a 4 power scope...............doesn't matter. I'm happy if I can manage just under 2 MOA. I have shot one ragged hole, many times but with only fifty percent of the shots.
When I find a combination that works, I will load fifty rounds, shooting ten per day.............varying temperature conditions. Only after confirming repeatability, will I load in bulk. As little as two tenths of a grain of powder will make or break a load in that small shell casing.
Winelover