I have read as much as possibly available, but still am looking for some realtime experience in regards to choosing a shooting bag, front and rear.don't want to have to buy all those lessons in comparing for myself, looking to learn from your findings. I know some of you may have one, yet possibly never used any others. Please don't tell me you "like" yours if you haven't had many to compare to. Caldwell tack driver? Bullbag? Just rice in a sock? Are these truly better than a bipod? Or have you tried them all and now you just use the bipod because it is more convenient? I have bought a new rifle(sig ssg3000), and am mounting nightforce 5.5-22x56 moar-t, want to practice out to 700 for fun, then possibly hunt with it (300 and less) .... Looking at atlas bipod and various bag systems.....thanks for any real time shared experience