Kaz you said " The trigger hammer does not make contact with the bolt catch." I thought that didnt sound right...so I just now got off my azz and went to the bunker and pulled out five of my 308's..all different configs except the "twins". every one has the hammer making contact with the bolt catch when shotgunned open with all kinds of different trigger groups...of course when the bcg is present when the rifle is closed its a different story. What you dont want is the hammer making contact with the lower receiver ...is that what you mean? cause if the hammer even slightly touches the lower that can cause light strikes. the hammer touching the catch where it wont even move is what I have...and my $hit works flawless :) Wash
Oh and you said this on the first post
I found a post on another forum, where a guy had issues with light strikes due to the hammer hitting the bolt catch, thus not putting full force into the firing pin. I checked mine and, sure enough, with the hammer dropped, the bolt catch is binding. The hammer rests on the bolt catch, not the firing pin. Obviously it strike the firing pin hard enough to send it flying forward and hitting the primer. Most of the time it ignites. My fix for this was simple, I machined a very small amount (0.025") off the back of the bolt catch. Basically, I removed the small lip on the rear of it. I can now drop the hammer and still move the bolt catch freely. Success, right?
NOPE it aint got nuthin to do with the hammer binding the bolt catch...if its a standard ar308 bolt catch or ar10 bolt catch.... hammer hitting the lower maybe yes :) Wash
80% lower...hmmmmmmm