OK, I know this has been asked and answered a million times, but here goes... I replaced the 5J spring that I was trying out with .40g bbs, with a2.3J so I could play on the fields around here. I'm pushing a .28g bb now trying to get it to 85yds. accurately, but can't get any consistency, high low, wing right, left. Is that bb too light , should be pushing a .30 or .35? Thanks for any input, my first try at airsoft sniping .