Greetings and first post.

Nice forum.I learned a ton from the stickies.

I have a 110 I built into a tactical competition and F-class rifle. It has almost zero preliminary extraction.

I can get .039" worth of feeler gauges between the collar on the bolt and the back of the action.

I was gonna do the set screw trick but I think I will experiment with making a shim out of shim stock and JB-welding it to the front of my collar.

My question is (I currently have a .039" gap)
How thick does my shim need to be to achieve the max purported .080" preliminary extraction? How do I figure that?

I have contacted SSS about ordering a upgraded extractor/ejector kit.

Huge thanks,
TresMon