RL15 / 175 SMK
Three groups of three shots followed by a single shot.
Barrel allowed to completely cool between groups. High 40's - low 50's, it didn't take too long but gave it generous time.
What I found interesting, though not surprising (nothing surprises me, thats why I shoot a 10 shot group) is that shots 4-10 are completely inside the first three shot group.
Also, 8,9,10, would measure in the .1's if not less.