Quote Originally Posted by scimitar View Post
The power was up only from 520 fps to 545 fps . so washers . the rear sledge bolt came loose after about 50 shots . is is adsvisable to lock tight this . seeing that it releases the internals ??? HOLLY
That rear bolt should be done up tight enough that it doesn't need loctiting, using a small bar through the hole provided for tightening purposes. Don;t go crazy though, it's ally. Soft loctite would be fine if it continues to be a propblem.

Out of interest, how much preload would you say you have in the gun right now ? ie how far does the end cap need be be shoved before you can screw that rear bolt in ?