Please could someone help me with some advice. I have been trying out a couple of lg110,s belonging to club members. The first one I tried was a new hft version with a moderator on and shoot as dead as a dead thing, the other one was an older model with a stripper on it. When shooting the second one, it for want of a better word it recoiled it seemed to jump, it moved like a spring gun obviously not as much but it did. I tried it without a pellet in it and it seemed to disappear. Can anyone offer some advice please?