Guys I've a rifle that groups lights out at 100yds. But at 300 it opens up alot?? Is it just my form. Heard someone mention free recoil might be a problem? I assume "free recoil" is just a term for shooting from a bench and just squeezing a sand bag with the non trigger hand?? I just hunt the rifle and have been squeezeing the bag at the bench. Kinda feel like I should be holding the forearm like I would when I huntr? Also, see guys at the range and they set the barrel in a sand bag a certain way. Trying to maintain cosistant forearm pressure of something? Then others reccomend a good sling for offhand shooting?? Won't a sling put even more pressure of a stock against the barre.