Bullseye-L Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

How to get correct recoil spring weight for 1911

+7
GME
javaduke
SW-52
RodJ
Allgoodhits
LenV
Psween
11 posters

Go down

How to get correct recoil spring weight for 1911 Empty How to get correct recoil spring weight for 1911

Post by Psween 9/27/2021, 2:18 pm

I am pretty new to the 1911, been shooting this SA RO for about a year. It still has (I think) the original (#16?) Recoil spring. I have found best accuracy with a Brazos 185 and 4.0 BE, but it won't lock the slide back, and occasionally fails to eject. I bumped up the load until it functioned well, but would like to drop back down for accuracy and recovery. I ordered the Wolff reduced power spring pack, but not sure how to know I have the 'right spring. I know to start high and work down until it functions, but is that it? Is there a way to easily tell if I get too low? I just don't want to start any unseen damage or unnecessary wear.

Patrick

Psween

Posts : 44
Join date : 2020-07-17

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by LenV 9/27/2021, 2:35 pm

I suppose a scientific approach could be calculated but for me I just let the brass tell me. I want the brass to make it to my net. Not fly over the top or dribble out under the pistol. If your brass is shooting across the range and smacking the shooter 3 lanes over then add spring. If the shells land about 2ft from where your standing (no net) then your just about perfect.
LenV
LenV

Posts : 4453
Join date : 2014-01-24
Age : 71
Location : Oregon

Allgoodhits and lakemurrayman like this post

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Psween 9/27/2021, 2:46 pm

That's about where they land now with that load, so maybe the 15 will be the ticket. Sounds like I might be stressing about beating up the gun for not much reason.

Psween

Posts : 44
Join date : 2020-07-17

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Allgoodhits 9/27/2021, 2:59 pm

Psween wrote:That's about where they land now with that load, so maybe the 15 will be the ticket. Sounds like I might be stressing about beating up the gun for not much reason.
Try shooting with two hands, with firm grip. If it locks back then, then you need to either grip it tighter when using one hand, reduce the recoil spring weight, or up the powder charge. Unless you are shooting hot loads, then a plus 1-2 tenths grain, may do the trick.
Allgoodhits
Allgoodhits

Posts : 554
Join date : 2017-09-17
Location : Northern Virginia

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by RodJ 9/27/2021, 3:16 pm

3.6 BE with 200 gr Brazos SWC functioned perfectly in my new RO. Interesting that yours is having an issue - not the same load but doesn’t sound that far off.

Maybe you have a tighter gun than mine?

RodJ

Posts : 160
Join date : 2021-06-26

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by SW-52 9/27/2021, 3:22 pm

Psween wrote:I am pretty new to the 1911, been shooting this SA RO for about a year. It still has (I think) the original (#16?) Recoil spring. I have found best accuracy with a Brazos 185 and 4.0 BE, but it won't lock the slide back, and occasionally fails to eject. I bumped up the load until it functioned well, but would like to drop back down for accuracy and recovery. I ordered the Wolff reduced power spring pack, but not sure how to know I have the 'right spring. I know to start high and work down until it functions, but is that it? Is there a way to easily tell if I get too low? I just don't want to start any unseen damage or unnecessary wear.

Patrick
i run my accurized range officer with 11 and 12 lbs recoil springs or try 12.5 https://shopwilsoncombat.com/Recoil-Spring-5-Full-Size-Chrome-Silicon-125-Lb/productinfo/703G-12.5/
SW-52
SW-52

Posts : 743
Join date : 2015-07-20
Age : 37

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by javaduke 9/27/2021, 4:10 pm

I was taught by several gunsmiths that there's no exact math when it comes to selecting the correct spring tension. You should either start with the lightest spring and work your way up until the gun stops cycling reliably and has multiple FTEs and FTFs, then back up one. Or start with the heaviest weight and work your way down until the gun starts cycling reliably. And by reliably I mean I can go through TF and RF portion of the 900 match without any alibis. That is, if the ammo is right. 
My standard load is 200gr LSWC over 3.7gr BE, and one of my guns works perfectly using a stock 16 lbs spring, but one other gun only works when I put 12 lbs spring in it. And another one (with slide mounted Ultradot) needs a 10 lbs spring.
I think it's better to develop an accurate load and then tune your gun to it, not the other way around.

javaduke

Posts : 509
Join date : 2012-07-04

https://bullseyepistolblog.net/

flyer898 and Ray Dash like this post

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by GME 9/27/2021, 5:33 pm

I have an accurized RO.  I'm running the 180gr Brazos coated with 4.2gr Bulleye and Wolff 10# spring.  I'm using a 30mm Matchdot II with a pair of heavier than usual (3 screws wide) rings and a full length pic rail.  I've also run 185 gr swaged lead over the same powder charge.  I may migrate to Zero 185 gr JHP, and I have plans to work on my loads and see if, or to what extent, I can reduce them.

GME

Posts : 105
Join date : 2020-09-27
Age : 72
Location : Gig Harbor, WA

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Larry2520 9/27/2021, 6:20 pm

The old favorite is a 10 lb spring. You can use anything from 10 to 12 lbs but use a buffer on the rod to keep the slide from battering the frame. My loads will cycle my ball gun pretty well. 3.8 grains bullseye or clays behind 200 grain swc.

Larry2520

Posts : 107
Join date : 2017-05-07

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by RodJ 9/27/2021, 8:06 pm

RodJ wrote:3.6 BE with 200 gr Brazos SWC functioned perfectly in my new RO. Interesting that yours is having an issue - not the same load but doesn’t sound that far off.

Maybe you have a tighter gun than mine?  
I just got back testing Brazos bullets 185 gr SWC over 4.0 grains bullseye, old Remington no 2 1/2 primers, new Starline brass. .030 shoulder. Only 25 rounds in 5 round strings, but not a single hiccup.  Fired, ejected, locked back perfectly. Bone stock everything except old style pachmayr grips.

RodJ

Posts : 160
Join date : 2021-06-26

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by GME 9/27/2021, 11:11 pm

I must be missing something, but I cannot find 185 SWC bullets on the Brazos website.  I find 180s, which is what I've been using.  Do you have to call Brazos to get 185s?

GME

Posts : 105
Join date : 2020-09-27
Age : 72
Location : Gig Harbor, WA

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by TonyH 9/28/2021, 6:40 am

AFAIK, those are the same bullet....they weigh out around 182-183 grains typically.
TonyH
TonyH

Posts : 623
Join date : 2018-08-06
Location : Utah's Dixie

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by RodJ 9/28/2021, 6:46 am

GME wrote:I must be missing something, but I cannot find 185 SWC bullets on the Brazos website.  I find 180s, which is what I've been using.  Do you have to call Brazos to get 185s?
I’m dylsexic… “45” and “180” equals 185.  Tony is correct that they are 180 gr.

  Embarassed  Sorry about that.

RodJ

Posts : 160
Join date : 2021-06-26

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Psween 9/28/2021, 8:15 am

My oops in the original post, I'm shooting the powder coated Brazos 180 SWC, bevel base. I've also been experimenting with the Zero swaged 185 and got the numbers backward. In any case, they shoot well, as long as I can get the gun to function with them. I think I should be able to get there, the spring kit has 11#-15# springs in 1# increments , so one should work.

Psween

Posts : 44
Join date : 2020-07-17

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by faraim 9/28/2021, 8:28 am

One benefit from the light loads/reduced spring set up is the GI grip safety tang no longer tries to burrow into the web of my hand.
faraim
faraim

Posts : 33
Join date : 2020-06-10

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Kp321 9/29/2021, 3:23 pm

There are there variables in 1911 slide dynamics; recoil spring weight, mainspring weight, and firing pin stop shape. Reducing mainspring weight will let the pistol function with a heavier recoil spring, needed if the barrel has a tight lockup. A square bottom firing pin stop will also reduce slide velocity. Experienced pistol smiths will juggle all three of the variables for proper operation and feel.

Kp321

Posts : 126
Join date : 2019-06-17

RodJ likes this post

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Psween 9/30/2021, 6:39 am

I'm also not using a dot, so I don't have that weight to deal with right now. I may put a reflex dot on at some point, so probably have to change springs again. Thanks for the help, I should get the springs today and will start testing.

Psween

Posts : 44
Join date : 2020-07-17

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Kp321 9/30/2021, 9:24 am

Psween wrote:I'm also not using a dot, so I don't have that weight to deal with right now. I may put a reflex dot on at some point, so probably have to change springs again. Thanks for the help, I should get the springs today and will start testing.
Don’t sweat over the extra weight of a red dot sight. Unless you are on the ragged edge of function, the sight weight won’t make much difference. I run reflex sights rather than tubes but have not seen any difference in function after installation.

Kp321

Posts : 126
Join date : 2019-06-17

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Psween 10/3/2021, 6:11 pm

I swapped in the 15# spring with no other changes an fired 5 trouble free magazines. No FTE, slide locked back every mag. If it proves out over the next few hundred rounds that me be the easiest fix ever. Thanks for the tips and info.

Patrick

Psween

Posts : 44
Join date : 2020-07-17

RodJ likes this post

Back to top Go down

How to get correct recoil spring weight for 1911 Empty Re: How to get correct recoil spring weight for 1911

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum