I shoot the superformance version in my 10PC and it has made 1/2" groups at 100yds since the first time to the range. I also bought the regular match version but have not fired any of it yet since it "supposedly" has a lower muzzle velocity. I didn't know better, so I bought 8lb of superformance powder only to find that it apparently is not the stuff used in the 223 cartridge. Now I have a 243 and there are loads listed for that caliber.