I managed to get time away from the golf course today to shoot a couple of new ammo types through the 10-22, it's just a 25 yard indoor range so I couldn't shoot off a bench or bipod, just barricade style. Anyway I'm testing ammo to see what is worth trying at 50 yards the next time I can get to the big range with proper benches, my usual ammo has been RWS Target Rifle. I cleaned the barrel before leaving home, then fired 10 fouling shots before starting. I also fired 10 fouling shots when switching ammo and shot 5 x 10 shot groups with each ammo. It has an 18" Green Mountain .920 fluted barrel, VQ drop in trigger at 2 lb. 4 oz., an old Fajan adjustable stock and a Weaver 6-20 AO scope (not the one in the picture here). Both types of ammo tested today ran flawlessly, no problems of any kind. SK Pistol Match Special - this is supposed to run just a little hotter than the regular Pistol Match. My two best groups were with this today, although a couple of not so good groups. Measured from the lube rings left on the paper edge to edge then subtracted bullet diameter to get group size. The SK produced a best of .155" c-c and a worst of .53" c-c with an average of .3425" c-c. I'll definitely be trying this from the bench at 50 yards. Outside edge to edge measurement ranged from .75" down to .375", the orange circles are 1" diameter. Next up was the Lapua Pistol King, not so accurate but seemed like it wanted to shoot, I may give this a chance at the 50 yard line. Best group was .28" c-c, worst was .53" c-c, average was .445 c-c.