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Spring Combination

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Spring Combination Empty Spring Combination

Post by Steve K on 6/18/2020, 4:17 pm

I have a Springfield Armory 45 ACP that has been accurized but I am wondering about a better combination of recoil and hammer springs. The pistol is accurate but the trigger is a little stiff although it is 3 lbs 12 oz. I used 185 grain SWC bullets with 4.0 grains of Bullseye. I think the factory recoil spring is 11 lbs and the hammer spring is 23 lbs. If you shoot the same load what have you found to be the best spring combination?
Thanks

Steve K

Posts : 82
Join date : 2015-11-09

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Post by DA/SA on 6/18/2020, 4:37 pm

I'm at 19 pound main spring and 14 pound recoil spring in my RO with iron sights.

Are you using an optic?
DA/SA
DA/SA

Posts : 656
Join date : 2017-10-09
Age : 64
Location : Southeast Florida

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Post by Tripscape on 6/18/2020, 6:04 pm

Note that mainspring will have little impact on trigger pull weight. Some say 25%, I would say less than that. Nevertheless it is good to go down in weight anyway. What will give you the most effect on the trigger pull is the leaf spring setup. This means adjusting discnnector and sear leafs proportionately to give you desired overall trigger pull and pass all safety protocols + pass trigger pull weight for your sport (3.5lbs I assume). My rule of thumb is adjust sear spring finger weight to be +5-8 oz after gray line of hammer drops not passing safety some of the time. Then take that weight, multiply by 2 and that will be your disconnector spring finger weight. This way pre-travel on the trigger will pre-stage you for sear wall / break. Almost like a 2 stage trigger. My guns are currently set up with  1lb 10 oz pre travel and 13oz break. (These are not set up for competition but pleasureshooting) Pain in the butt to go back and forth with adjustment but well worth it. Oh, I had 23lb main spring and went down to 19, barely broke a dent in pull weight other than better "feel".

Tripscape

Posts : 184
Join date : 2019-03-23

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Post by Tripscape on 6/18/2020, 6:17 pm

In all my ranting I forgot to mention - check your pull weight pre-travel and then your break weight. Many have very lite pre and heavy break. For example 1lb pre and 2.5lbs break for combined 3.5lbs will feel much heavier than 2.5 pre with 1lb break.
 This balance can be adjusted by leaf spring with no monetary investment.

Tripscape

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Join date : 2019-03-23

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