[Airedale]

I do not think you have a problem kastastrof, most bolt guns have some slop when pulled back, if the tolerences were too close the least little piece of crap or dirt that got in there would bind it up. What counts is when the handle in locked down into battery, it should be good and tight, if it moves around then I would say you have a problem. It is not a good practice to change bolts on the same model gun.