I'm in Pa. The trigger pull is heavy but crisp. Weighed 8 lbs then after toiling it went to 6 lbs. The trigger modes freely with the lock out, it's seems like the weight. I feel is the sears lever return spring. Perhaps changing the pivot point as suggested will improve it.
Changing the sear spring (what you refer to as the "sears lever return spring") is not going to give you a significant reduction in trigger pull weight, because that is not the spring that puts the most force on the lock parts.
The purpose of the sear spring is to ensure there is JUST enough tension on the sear to keep the sear nose properly engaged against the tumbler and so the sear nose won’t slip off the tumbler as the lock is cocked. The TC sear spring tension probably has a LITTLE more spring tension than what it absolutely has to have to perform this function, but it is NOT going to be a whole lot stronger than it needs to be. IOW, I extremely doubt that a lighter tension sear spring, that will still perform the basic and vital function of keeping the sear nose in proper engagement, is going to give you any more than ¼ to at most ½ pound reduction of the trigger pull.
It has been suggested that you could get a replacement sear spring from Brownell’s. While that information is basically correct and well intentioned, it is NOT as simple as calling Brownell’s and ordering a lighter power sear spring to fit your lock as from what I’ve been able to research, they don’t have a spring designed to do that. What Brownells does sell are “coil spring packs or kits” where one may choose a longer spring of the same diameter (or only a couple thousandths of an inch smaller) than your sear spring and cut a shorter piece to use in your lock. You need a precision dial caliper to measure the diameter of you coil spring and then purchase the “coil spring pack or kit” that has that diameter of coil spring in it.
http://www.brownells.com/gunsmith-tools-supplies/small-hardware/bulk-spring-kits/index.htmSounds somewhat easy, eh? Unfortunately, even that description does not tell you the whole story. You may find the coil spring that is the right diameter to go in your lock is too light or too heavy for what you need. You MAY have to buy more than one kit to get a spring that will work. You MAY buy two or three kits and not get a spring you can use. IF you want to try this route, then I suggest you get the diameter measurement of your sear spring and CALL Brownells and ask to speak to a Technician. Tell him the diameter of your coil spring and what you want to use it for and hopefully they can suggest the correct spring pack. This is what gunsmiths do when confronted with looking for springs where one is not specifically made and available for that purpose.
That is why I suggested that you try going to a hardware store to see if you can get a spring that will work before going through all that. I can’t promise you will find one, but it is going to be less expensive and less time consuming if you do. I have walked into Lowe’s, Home Depot and other Hardware stores MANY times over the years with my Precision Dial Calipers in hand to see if they have a spring I can try. If that doesn’t work, perhaps you know a local Machinist who could get you a spring that may work after shortening it. If that doesn’t work, then maybe you could take your calipers to a Parts Dealer at a Gun Show and check those springs.
Or perhaps once you get the precision measurement from a Precision Caliper on the diameter and length of your sear spring, perhaps someone on the forum will have a spring that may work.
Gus
