zzt Posted March 26, 2021 Share Posted March 26, 2021 There have been enough questions about which recoil spring to use that I thought I'd post this. These spring rates apply to any caliber in an uncompensated gun. Also note that if you have significantly lightened your slide you may have to up one pound. It's been so long I can't remember if I got this from Jerry's book or elsewhere. PF 191 16lb recoil spring (factory 45 load, 230@830) 179 15lb spring 167 14lb spring 155 13b spring 143 12lb spring 131 11lb spring 119 10lb spring Link to comment Share on other sites More sharing options...
Aircooled6racer Posted March 26, 2021 Share Posted March 26, 2021 Hello, I think some of that data is a little out dated now. Most guys running major Limited pistols are using 10-14lb recoil springs. 9mm minor load guys are running 8-11lb springs. Testing what load you are using and what gives you the best hits on paper is what counts for gun games. It also has to be 100% reliable. Thanks, Eric Link to comment Share on other sites More sharing options...
ltdmstr Posted March 27, 2021 Share Posted March 27, 2021 I'd say those numbers are probably a good starting point for a non-competition shooter with a factory stock gun. But for what we do, they're pretty far off the mark. Most shooting 165+ pf limited gun are running 12 or 13 lb springs. And most shooting 135+ pf are running 8 or 9 lb springs. Link to comment Share on other sites More sharing options...
zzt Posted March 27, 2021 Author Share Posted March 27, 2021 I don't know about that. I used a 14 lb. spring for SS major. Same for Limited major. A buddy was having a problem with his 1911 minor. We went up the scale with springs and 11 lb. worked the best in his gun with factory ammo. I'm convinced that a lot of shooters are using too light a recoil spring. Geez, I'm running an 11 lb. in my tight-as-a-drum 9mm major Open gun. I think a lot of people listen to BS or group think and don't bother to tune their gun to their load by balancing recoil spring weight, mainspring weight and firing pin stop radius. I'm also convinced that a lot of the cracked slides in Open are due to using too light a recoil spring. Link to comment Share on other sites More sharing options...
Bakerjd Posted March 28, 2021 Share Posted March 28, 2021 11 minutes ago, zzt said: I think a lot of people listen to BS or group think and don't bother to tune their gun to their load by balancing recoil spring weight, mainspring weight and firing pin stop radius. I'm also convinced that a lot of the cracked slides in Open are due to using too light a recoil spring. I definitely agree with you on this. For me I use 9lb recoil spring for 9 minor, 12.5lb for 40 major. Link to comment Share on other sites More sharing options...
ltdmstr Posted March 28, 2021 Share Posted March 28, 2021 1 hour ago, zzt said: I don't know about that. I used a 14 lb. spring for SS major. Same for Limited major. A buddy was having a problem with his 1911 minor. We went up the scale with springs and 11 lb. worked the best in his gun with factory ammo. I'm convinced that a lot of shooters are using too light a recoil spring. Geez, I'm running an 11 lb. in my tight-as-a-drum 9mm major Open gun. I think a lot of people listen to BS or group think and don't bother to tune their gun to their load by balancing recoil spring weight, mainspring weight and firing pin stop radius. I'm also convinced that a lot of the cracked slides in Open are due to using too light a recoil spring. Yeah, I was thinking strictly limited and production guns. Not open. All of my 40s, whether single stack or double, bushing or bull, are running 12 lb springs with no issues (and lots of rounds). My single stack/limited 9s, both bushing and bull, are running 9 lb springs with no issues. But I run 19 lb hammer springs in all my guns bc I don't like light springs and squishy triggers. So that's a factor. Like you said, it all works together. As for open guns, that's really not my cup of tea. But I do know most are running pretty light springs even with 175 or so pf. Whether that's a good idea for longevity prob depends on what your expectations are. Link to comment Share on other sites More sharing options...
zzt Posted March 28, 2021 Author Share Posted March 28, 2021 I run 19 lb. main springs in all of my 1911/2011s, except two. One has an 18 lb. just because. My 1911 Open steel gun has a 17 and uses a 7 lb. recoil spring and a FPS radiused all the way up to the firing pin hole. That is the only way I can get it to cycle with 144 PF steel loads. Other than that, I tune the guns to minimize the secondary recoil impulse and return the sights to target without a dip or having to force it down. For me, that always seems to require a slightly heavier recoil spring. Even without having a buddy video the shots it is easy to tell. If the muzzle dips on return, the spring is too heavy. If it doesn't return the spring is too light. Link to comment Share on other sites More sharing options...
waktasz Posted March 28, 2021 Share Posted March 28, 2021 10 or 11 for everything Link to comment Share on other sites More sharing options...
shred Posted March 29, 2021 Share Posted March 29, 2021 This is the chart from Dawson Works well as a starting point. Link to comment Share on other sites More sharing options...
Butterpuc Posted March 30, 2021 Share Posted March 30, 2021 I am pretty sure I use a 12lb spring in my 1911 45 major, no issues once I switched. Link to comment Share on other sites More sharing options...
waktasz Posted March 30, 2021 Share Posted March 30, 2021 I don't know why 40 minor would need a heavier spring than 9mm. 40 at minor speeds is lower velocity and pressure compared to 9mm and from experience I definitely needed a lighter spring when setting up my 40 minors guns compared to a 9mm. Link to comment Share on other sites More sharing options...
ferret-army Posted April 12, 2021 Share Posted April 12, 2021 oh nice, this is a pretty good starting point to play with recoil spring rate. thanks! Link to comment Share on other sites More sharing options...
twodownzero Posted April 12, 2021 Share Posted April 12, 2021 On 3/29/2021 at 9:15 PM, waktasz said: I don't know why 40 minor would need a heavier spring than 9mm. 40 at minor speeds is lower velocity and pressure compared to 9mm and from experience I definitely needed a lighter spring when setting up my 40 minors guns compared to a 9mm. I don't know about you, but I don't load slower loads at a lower pressure. I use a faster burning powder that produces about the same pressure, just lower velocity at the muzzle. I like Dave's chart above, it's pretty close to what I use for springs. 9-10 pounds in a 9mm 1911 without a comp, 12.5 pounds in my .40, and 14 pounds in .45 with a full weight slide are what I use. Link to comment Share on other sites More sharing options...
jimbullet Posted May 1, 2021 Share Posted May 1, 2021 Hmmm, I've been using 12 lb for major on 40 S&W. Its IPSC major which is a minimum of 170PF. My loads have been reaching PF around 180. Link to comment Share on other sites More sharing options...
smfort Posted May 17, 2022 Share Posted May 17, 2022 Thanks for the information, very helpful. Link to comment Share on other sites More sharing options...
rpm8300 Posted May 17, 2022 Share Posted May 17, 2022 I ran 147s with a very fast N310 and 7lbs was the sweet spot; this is admittedly very subjective. I never felt the slide was too 'slow' or I was outrunning the gun. It tracked very predictably and was very soft. Link to comment Share on other sites More sharing options...
jcc7x7 Posted July 20, 2022 Share Posted July 20, 2022 Thought Recoil springs are there to close the gun. Obviously it has to strip the round out of the magazine while closing the slide. The larger the round the more spring is required to strip the round out of the magazine Main springs do a lot to control slide speed. Like many above I use 19lbs to start on my builds. Occasionally go up to 20/21 lbs Link to comment Share on other sites More sharing options...
APL-G35 Posted July 21, 2022 Share Posted July 21, 2022 11 lbs on my .40 major guns and I'm running 8lbs in my open gun. No issues at all. Link to comment Share on other sites More sharing options...
bigboy69 Posted October 24, 2022 Share Posted October 24, 2022 I would say that's a good starting point chart Link to comment Share on other sites More sharing options...
pjb45 Posted December 9, 2022 Share Posted December 9, 2022 On 3/28/2021 at 7:11 PM, shred said: This is the chart from Dawson Works well as a starting point. Nice chart. Thanks Now, I think I am still over sprung. Link to comment Share on other sites More sharing options...
Effectus Magis Per Minor Posted December 9, 2022 Share Posted December 9, 2022 FYI-9mm 1911-I have found that a 19lbs mainspring, close radius firing pin stop (Dawson) and 9 lbs variable recoil spring run great for me. Link to comment Share on other sites More sharing options...
cnote Posted April 24, 2023 Share Posted April 24, 2023 On 3/28/2021 at 9:11 PM, shred said: This is the chart from Dawson Works well as a starting point. thank you Link to comment Share on other sites More sharing options...
Exiledviking Posted July 4, 2023 Share Posted July 4, 2023 Sorry to bump this thread, but I found the information quite helpful and I have a question; do most of you run a 19 lbs mainspring with 9mm minor loads in a 5" no compensator guns? Link to comment Share on other sites More sharing options...
bigboy69 Posted July 4, 2023 Share Posted July 4, 2023 (edited) I typically run a 15 or 16 lb mainspring. Edited July 4, 2023 by bigboy69 Link to comment Share on other sites More sharing options...
Effectus Magis Per Minor Posted July 4, 2023 Share Posted July 4, 2023 1 hour ago, Exiledviking said: Sorry to bump this thread, but I found the information quite helpful and I have a question; do most of you run a 19 lbs mainspring with 9mm minor loads in a 5" no compensator guns? 133-135 PF. In my 9mm Government Model I am running a 19 lbs. mainspring with a flat bottom firing pin stop and 10 lbs recoil spring. Link to comment Share on other sites More sharing options...
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