Got out to shoot this mornin,was havin trouble with primers sticking in my MU breechplug with no powder/sabot/bullet loaded. I loaded 100 grns BH209,777 primer,Hornady 300 grn SST in a Harvester crush rib sabot.All shots were 100 yds from my bench,68 degrees,2-3 mph breeze towards target. Williams WGRS rear peep and stock NEF front firesight.The 777 primers went off all 17 times,no hangfires or misfires.I did have 2 primers stick hard enough it took 2 screwdrivers on each side of primer to get them out,interestingly those 2 shots also hit 2 1/8 and 2 3/4 " low out of group.The other six shots went into 1 1/2" center to center.I'm very pleased with the group,not so happy about the 2 that dropped.I've included a photo,not sure if it will come thru.