You are talking about the part of the timing setting nothing to do with the bolt....unless you mean by having the marker fire too early in the cycle then you will get burst in the breech (as the ball drops) and as the bolt is moving so you said bolt length. It has already been said but since a ball is loaded and then fired the bolt is already at its furthest point forward and then if you don't fire, the ball (with the barrel pointed down of course
) falls out...it is past the anti-double ball, it is out of the timing sequence, so absolutely nothing to do with the sear lug. Vantrepes (moodypaintballs user name on here) writes some very informative 'cocker articles so next time just link to his site and let the user find the info, being as you couldn't have read either this thread title or Vantrepes's articles......Sorry if this is coming across as a little harsh but 'cockers timed properly are great but people like to fiddle and given the wrong info they are very likely to be in need of an Airsmith.