Wad Gun Trigger Pull and Recoil Spring Question

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Wad Gun Trigger Pull and Recoil Spring Question

Post by wallyccspd on 8/23/2017, 9:30 pm

Good Evening All:

About 5 months ago, I took a gun over to a local gunsmith with a bag of parts from Brownells, and he put it all together as my very first bullseye gun.  He installed a Hart NM Barrel, an oversized fitted barrel bushing, drilled and mounted a Clark Scope Mount, tightened up the rail/frame fit and installed a Cylinder/Slide trigger kit and a new slide stop and mainspring housing.

When it was new, It lifted a 3 1/2 pound trigger pull check weight.  Gun runs great, about 2K so far through it over the last 4 months or so and not a hiccup.  2K in 200 LSWC's and a whole lot of dry fire.  Only remains that I do my part behind the trigger!

Last night I went to check it again and the hammer fell on 4 pounds of weight.  So I went downwards to see how low it'll go.  It falls on 3 and 3 1/2 pounds pretty regularly.  NRA apparently calls for a minimum of 4 pounds weight.  I am guessing that the trigger pull is now about 2.9 pounds or so.  Do not have a digital gauge to verify this; just a swag.

I am shooting my first 2700 in Beloit Sunday and with the NRA rules I became concerned.  Slight panic mode.

So, I went into my parts drawer and retrieved another spring, guessing it was GI surplus bought at God knows what gun show, and installed it.  Now it lifts 4 1/2 pounds. I have no additional weights so it is maxed out at 4 1/2.  A slight tug downwards on the weight and the hammer falls.  So I guess the gun is Kosher now, hammer falling at something just over 4 1/2 pounds or so.

My question:  Is this reduction in trigger pull normal with use?  I thought that gun trigger pulls tend to get heavier as the gun wears and not the other way around.

The other question is with the recoil spring.  I bought a drop-in recoil spring and I recall that the weight is 9 pounds.  I was told the OEM spring that came with the base Springfield Armory GI1911A1 pistol runs 14 pounds.  

My question here: With all the different weights in recoil springs on the market, is a 9 pounder what I need here, or is there a criteria that should guide me in what type of weight coiled spring I should utilize in the gun?  

Note that I do not have any fail to feed/chamber/fire/extract/eject issues.  Gun runs darned good with 3.8 BE/200 H&G Bullets.  Brass doesn't get trashed up. no wear on the frame that I can see.

I will do a bunch of dry firing before Sunday and hopefully the gun stays together OK so that I am not embarrassed at the match.

Appreciate your insights to this matter.

Regards,

Wally

wallyccspd

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Join date : 2015-04-03

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Re: Wad Gun Trigger Pull and Recoil Spring Question

Post by zanemoseley on 8/23/2017, 9:44 pm

What spring did you swap that increased trigger weight to 4.5 pounds? Was it the sear spring? Its not uncommon to have the sear spring relax over time and drop in weight, it can also cause the hammer to fall if it gets low enough. After just 2000 rounds is a bit quick though. The left 2 legs on the sear spring will help you add weight to the trigger, bend them forward toward the muzzle to add weight, typically the left leg which contacts the sear is further forward than the middle leg.

Also I believe the minimum weight on a 45 is 3.5 pounds not 4 pounds. I've also never had my guns checked for weight, I'm sure they do it at Perry but not sure where else.

Regarding recoil spring I'm not sure I would mess with a good thing, if it's running right with a 9 pounds spring and not beating up the gun leave well enough alone at least until match season is over then experiment. With that said 9 pounds sounds a bit light for that gun. Some depends on how heavy the red dot is. I believe 10-11 pounds are most common on pistols with slide mount dots.

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Re: Wad Gun Trigger Pull and Recoil Spring Question

Post by cdrt on 8/23/2017, 10:05 pm

Also I believe the minimum weight on a 45 is 3.5 pounds not 4 pounds. I've also never had my guns checked for weight, I'm sure they do it at Perry but not sure where else.

Correct, it's 3.5 for NRA Precision Pistol (bullseye) matches; 4 pounds for Service Pistol and EIC matches.
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Location : Amarillo, Texas

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