Shot 5 groups at 600 meters with my 6.5 SP-10 this weekend using all factory loads - Prime, FGMM, Hornady ELD 140's and 147's. Largest group was 5" (Prime) and smallest was 1.8" (147's). The other 3 were 2.5", 2.7" and 2.8". The 147's I shot twice and did the 2.5" group the second time as I ran out of daylight. The SP-10 is a very smooth shooting rifle.