Been playing with a husqvarna 310A and have been getting outstanding groups barrel for barrel but no matter what I do ,as close as I can get the groups together is 8" @ 50yards. The butt has been weighted, forearm to thin to ad lead, have tried triple seven, 4756 and longshot (all show 8" spread). Longshot is the best of the lot. Groups at 8" but much lower than the others as it groups at higher velocity 1400 fps and I believe is beating the vertical recoil jump but still getting the horizontal spread. It may be my trigger pull causing the problem but it seems much to consistent. On the weekend I shot three lefts into the same hole and two rights in one hole with the third going wild by an inch. During this grouping we even changed to a standing bench to see how hold and trigger pull affected things to no avail. I'm not complaining as this thing is grouping like a house of fire but I have got to get some regulation. Is it time to pull the ribs and regulate or is there something else I should try?