I used all factory loads (which in turn gave me alot of brass to have reloaded). I didn't have a ruler on me, and my Leatherman has no ruler, so I used change in my pocket, knowing that a quarter is about an inch from tip to tip. My largest group was covered up by a quarter at 100 yards with some Winchester 50 grain soft points. My smallest was within a nickel (meaning that no holes were visible with the nickel over them) and were all touching) with Federal Premium 52 grain Boattail hollow points. The 40 grain Winchester Ballistic Silvertips produced a great group that was just noticeably larger than the smallest group. All of this was done on sandbags with a stock rifle and a gentle breeze blowing. By the way, I knocked the snot out of an old oil filter that someone nailed in the ground at 350 yards. 3 out of 5 rounds in the oil filter. The 1' by 2' steel targets at the 350 yard mark were hit 12 out of 12 times off sandbags. I am very impressed by this rifle. It is also a great crow gun out to about 200 yards, but a little too expensive for crow control. heh heh. When I get back to the range, I will take a ruler and get the actual group sizes. One further note, this rifle has a sweet trigger in case anyone cares.
Oh yeah, all of these were 3 shot groups due to the fact that I was breaking in the barrel.
SSG G.