ormondopen Posted December 11, 2012 Share Posted December 11, 2012 (edited) I am running a 12lb sprinco in a 6" lightened slide bushing barrel, 6" recoil system w/ 5" plug for 5" spring. I am getting nose diving on the follow up shots. do I need a heaver or light spring? Edited December 11, 2012 by ormondopen Link to comment Share on other sites More sharing options...
mike4045 Posted December 12, 2012 Share Posted December 12, 2012 Never had much luck with Springco. Std rod and spring with good mags. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted December 12, 2012 Share Posted December 12, 2012 Hello: STI make a plug for the 6" slide and a bushing barrel. You can use a stock 5" recoil spring with it. If you want to get your gun running right now use 2 -5" plugs stacked behind each other. That should give your 5" spring enough force to feed the next round. Shooters Connection have the STI plug and Power Factor Shooting have the Briley 6" aluminum guide rod. Hope this helps. Thanks, Eric Link to comment Share on other sites More sharing options...
Front Man Posted December 12, 2012 Share Posted December 12, 2012 What do the sites do sand bagged on a bench? (Not being a smart as, just curious.) Link to comment Share on other sites More sharing options...
ormondopen Posted December 12, 2012 Author Share Posted December 12, 2012 my rounds are not nose diving, the muzzle will nose dive on the follow shots. my first shot will be spot on but all consecutive shots at speed will be about 5" low. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted December 12, 2012 Share Posted December 12, 2012 Hello: I do fast splits at 7 yards to see what recoil spring I need. If the two shots are close together then the spring is good. I like to have the spring weight slightly on the heavy side to help with feeding. You could try a lighter recoil spring and see how it works for you. A Bill Drill on the clock is your next step. Whatever one gives you better hits and is faster, that is the way to go. The clock does not lie. On my very light 6" I built I use a 12.5lb ISMI recoil spring with a 17lb ISMI manspring. The firing pin stop is milled at an angle as well. I also use 165grain Montana Gold bullets. Hope this helps. Thanks, Eric Link to comment Share on other sites More sharing options...
CocoBolo Posted December 13, 2012 Share Posted December 13, 2012 A 12# is about as light as I have used in a 40, but I shot for years with a 14#, no diving. I've had the same issue, the screw in the front of the trigger guard came out and that puppy was a rockin, locktite fixed that problem. Link to comment Share on other sites More sharing options...
titandriver Posted December 13, 2012 Share Posted December 13, 2012 I run a 10lb Wolfe in my 6 inch Limcat, no nose-diving there! Up & back. Link to comment Share on other sites More sharing options...
ormondopen Posted December 13, 2012 Author Share Posted December 13, 2012 all my 5" limited's I used a 12lb so I assumed it would be fine. I will try a 10lb. I use a 15lb main and my FP stop is a brazos precut Link to comment Share on other sites More sharing options...
Sparky Posted December 13, 2012 Share Posted December 13, 2012 Usually if your second shot is lower than your first your recoil spring is to heavy. I'd try an 11# and a 10# to see if it makes a difference. Also could be your bullet weight. From what I've seen of 6 inch 40sw guns the lighter bullets work better. However, you want to make sure the lighter recoil springs are not causing damage to your gun by being to light. Every gun is a little different. Link to comment Share on other sites More sharing options...
a matt Posted December 14, 2012 Share Posted December 14, 2012 Aircooled and sparky then both have good 411. Good luck. Link to comment Share on other sites More sharing options...
ormondopen Posted December 15, 2012 Author Share Posted December 15, 2012 tested a 10lb yesterday, much better but still a little low. I want to try some 165's as well. Link to comment Share on other sites More sharing options...
titandriver Posted December 15, 2012 Share Posted December 15, 2012 I use 180's at 174 PF and a 10lb conventional Wolfe spring with 17lb main & 6 inch bushing barrel and sight goes up & back. If I put in the heavier bull barrel I will get a slight nose dive but it is noticeable. Link to comment Share on other sites More sharing options...
Sparky Posted December 15, 2012 Share Posted December 15, 2012 In my post I forgot about the Mainspring. Most 40sw shooters that I know use a 17# Mainspring. I see you tried a 10# Recoil Spring and it was better, but not where you wanted it. Trying 165gr bullets will also give you a different feel. With the 165's you might be able to go back to your 12# Recoil Spring. Try them all in different combinations until you find the right one. What Aircooled said was right on. Thanks A Matt. Link to comment Share on other sites More sharing options...
ormondopen Posted December 16, 2012 Author Share Posted December 16, 2012 (edited) did the bill drill yesterday, to get a relative tight group my splits were a 20 to 30. I know splits are an individual thing but are these to slow? Shot a match today using the 10# spring, splits were a little quicker from yesterday on the medium range shots w/ A/C hits. close stuff (7 yards avg.) were A/A. knock on wood never had an issue w/ a 15# main with all primers manuf. so I don't think I need to up it. also don't know if my slide weight yet, it might come into play. pix attached to show the lightened areas. suggestions appreciated if more weight out of the back would help. Edited December 16, 2012 by ormondopen Link to comment Share on other sites More sharing options...
RippSpeed Posted January 3, 2013 Share Posted January 3, 2013 (edited) I've been switching between a 10lb and 9lb but I'm using a aluma buff... No dive on both springs... 5" guide rod 5" recoil spring 5" reverse plug springco tactical springs and 17lb ISMI main spring I run the same bullet as my 5" Limited pistol ... 200gr Bear Creek what main spring are you running ismi or wolff ??? Edited January 3, 2013 by RippSpeed Link to comment Share on other sites More sharing options...
ormondopen Posted January 3, 2013 Author Share Posted January 3, 2013 I've been switching between a 10lb and 9lb but I'm using a aluma buff... No dive on both springs... 5" guide rod 5" recoil spring 5" reverse plug springco tactical springs and 17lb ISMI main spring I run the same bullet as my 5" Limited pistol ... 200gr Bear Creek what main spring are you running ismi or wolff ??? ISMI main, springco recoil Link to comment Share on other sites More sharing options...
Aircooled6racer Posted January 3, 2013 Share Posted January 3, 2013 Hello: I think you have the weight out of the right end I would not remove any weight from the back of the slide. Your next step should be undercutting the grip so you get your hand up higher towards the slide. That will help control some of the flip as well. As I stated above I use 165 grain bullets and for me that works great. Fast slide speed and gets back on target quicker for me. Some like the slower slide speed with heavy bullets but I don't. You will have to see what works for you the best. Lastly a profiled firing pin stop helps as well. Thanks, Eric Link to comment Share on other sites More sharing options...
ormondopen Posted January 3, 2013 Author Share Posted January 3, 2013 Hello: I think you have the weight out of the right end I would not remove any weight from the back of the slide. Your next step should be undercutting the grip so you get your hand up higher towards the slide. That will help control some of the flip as well. As I stated above I use 165 grain bullets and for me that works great. Fast slide speed and gets back on target quicker for me. Some like the slower slide speed with heavy bullets but I don't. You will have to see what works for you the best. Lastly a profiled firing pin stop helps as well. Thanks, Eric I shoot bayou 180's so I ordered some 155's from them. they dont have a 165 but I might order 1k from montana gold and try. I already did the undercut and it seemed to help as well as using a 10lb recoil. splits are slower than my 5" though. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted January 4, 2013 Share Posted January 4, 2013 Hello: The splits may be slower with the 6" because you are getting more flip with the 6"? I find my splits are faster with the 5" but my hits are better with the 6" Going from the 180's to the 165's helps my splits and hits with the 6". The 6" is just a different animal than the 5". Some like them some don't. If you can setup a test stage I would shoot both and count your hits and time. I have done this a couple of times over the years. I have also done this with different weights of recoil springs. It may surprise you what you find out. Hope this is helping. Thanks, Eric Link to comment Share on other sites More sharing options...
toothguy Posted January 5, 2013 Share Posted January 5, 2013 (edited) The slow-mo shots that start at 3:04 are interesting. Edited January 5, 2013 by toothguy Link to comment Share on other sites More sharing options...
match308 Posted March 7, 2013 Share Posted March 7, 2013 Thanks for the video. Answered many questions. Link to comment Share on other sites More sharing options...
RippSpeed Posted March 7, 2013 Share Posted March 7, 2013 what mag spring and follower are you running ??? Link to comment Share on other sites More sharing options...
Hello Posted September 21, 2013 Share Posted September 21, 2013 I run an 11lb. with a shock buff. Link to comment Share on other sites More sharing options...
Sandbagger123 Posted October 6, 2013 Share Posted October 6, 2013 The slow-mo shots that start at 3:04 are interesting. i am curious about this vid. they are using a 2011, which has basically 2 springs applying force on the slide. on striker guns like glocks and mp's, does this video also apply seeing they only have 1 spring? Link to comment Share on other sites More sharing options...
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