if u back it out, do not shoot it. i dont think it would be safe like that with all that powder. Try doing like the other try said, and stretch the spring. If that doesnt work, do the nipple trick i said and if it works then, go buy a new nipple. Trying to solve problems with out being able to hold the thing in your hands and inspect it is hard to do. Just trying to give you some ideas and where to look for possible problems. Dont get stressed out about it, Its going to be a simple fix.