Richard, as Peter suggests you must Loctite the brass to the barrel out of place. A stiff bolt can be caused by not tightening the bolt housing evenly when rebuilding because it can cause a twist in the bolt housing. Take it off and check to see if the bolt is then free travelling. If so refit the h...

Richard, use a heat gun on it's lowest setting. You don't have to heat it very, very hot. Heat it enough so you can just bear to touch it, same for anything you are heating to loosen on the gun. I find 2 applications of heat works best with a minute between them. This will allow the heat to soak in....

Hi all, just signed up to hopefully help RichieRich612 with his problem. I had problems with seating the pellets in my s410. I found that the barrel had moved forward because the Loctite holding the barrel seal holder had failed. I was able to remove the barrel and leave the brass holder in place. T...