My LVT is currently set for 14oz and is crisp as can be. Passes the bang and bolt slam tests just fine..................
From an earlier post on RFC....
Cooper 57M Trigger......
Has three adjustment screws...two on the front and one on the rear. Top front is overtravel and lower front is weight-of-pull. The one on the rear is sear engagement...and with too little, the rifle is dangerous. If OT and SE suit you, the *** (weight of pull) is all you need to adjust.
The best way I've found to adjust *** is to back the adjustment screw all the way out, and work inward from there. You can't hurt anything by doing this...just don't lose the spring behind the screw. I did! But Cooper sent me a couple for free...... With the *** screw all the way out, obviously that's as light as it gets...and it's still several ounces. The two-lever trigger won't allow any lower adjustment.
The contact surfaces of the trigger and sear can be polished to lighten the *** somewhat. I reworked my own trigger it's safe at about 8-9 ozs. but I keep it set at around 11 or 12. Six ozs. is the lightest trigger I've heard about...like on esidude's rifle. His was probably done by a "real" gunsmith. At whatever ***, I wouldn't consider the trigger safe until it passed the "drop" and "bolt slam" tests. And I test any rifle I buy.
I read somewhere...maybe on the Cooper WebSite, that they're developing a three-lever trigger for their rifles that's similar to the one Jewell once made. I don't know if they will be designed to retrofit or not...but I hope so. If I can find the information, I'll post a link here. Later.