I have put about 200-250 rounds through my new AAC-SD and I still can't get it to group any better than 1.5-2" at 100 yards. How many rounds does it take to break them in? I have tried running a hand load I worked up but it did not do any better. I have a B&C stock, brake, bushnell 3200 elite. I'm shooting off sand bags front and rear. I shot my brothers 7mag yesterday and could clover leaf 5 shots at 100 yards easy so I know it's not me. As it is my ruger 10/22 with a target barrel shoots better than my AAC-SD.