cybrosh Posted November 21, 2004 Share Posted November 21, 2004 I apologize if this was discussed before - I have purchased Wolff spring/guide rod paks for a friend with a glock 17C. He found the 20 LBS recoil spring to be the most convenient, but didn't replace the original factory firing pin spring. The gun wasn't as accurate as before(17LBS recoil spring factory standard). After replacing the original firing pin spring with the extra power firing spring that came with the 20LBS recoil spring, accuracy has been greatly imporved. Can anyone explain to me why is that? Cheers, Cy' Link to comment Share on other sites More sharing options...
Nik Habicht Posted November 22, 2004 Share Posted November 22, 2004 Just because you notice a change in accuracy after changing springs doesn't mean it's the cause.... Link to comment Share on other sites More sharing options...
cybrosh Posted November 22, 2004 Author Share Posted November 22, 2004 Hi Nik, 4 people tested the gun before and after, all have agreed the replacement of the firing pin/striker spring changed the accuracy. Link to comment Share on other sites More sharing options...
waktasz Posted November 22, 2004 Share Posted November 22, 2004 On Glocks the firing spring pin affects the trigger pull, probably has become a bit harder, although crisper breaking. Link to comment Share on other sites More sharing options...
Detlef Posted November 30, 2004 Share Posted November 30, 2004 it can't be the inherent accuracy that changed (the bullet is out of the barrel before the slide compresses the spring), but it can be the practical accuracy (when trigger pull affected). Now, I don't know much about the Glock, does the recoil spring alone influence trigger pull???? And when you say accuracy, what exactly do you mean, i.e. how exactly was it measured (tell us sample size [how many shots], center of group movement, and standard deviation/group size)? Just because 4 people agree on something doesn't mean it exists or is right... --Detlef Link to comment Share on other sites More sharing options...
waktasz Posted November 30, 2004 Share Posted November 30, 2004 The recoil spring doesn't affect the trigger at all. The firing pin spring and trigger spring do though. I'd like to see the results from a benchrest with both firing pin springs, I'd imagine they'd have to be the same, unless I am completely missing something. Link to comment Share on other sites More sharing options...
Detlef Posted November 30, 2004 Share Posted November 30, 2004 agree. Even better with machine rest... Link to comment Share on other sites More sharing options...
cybrosh Posted November 30, 2004 Author Share Posted November 30, 2004 Hi Guys, 4 guys tested the glock, 4 'experienced' guys(GIGN/SAS, IDF, gunsmith...etc'). I am not trying to brag but I to stress, that these guys have experience with small firearms(and big ) The dispersion/spread/scattering with the Wolff 20LBS Recoil spring and Glock original factory firing pin was much bigger than with the new Wolff firing spring. I wish I had pictures to show you. You know what? maybe I'll be able to test it again.... No one can explain this, not even Wolff! and the whole thing doesn't even sound logical! but it happenned...and there's nothing better than experience. Link to comment Share on other sites More sharing options...
waktasz Posted November 30, 2004 Share Posted November 30, 2004 Very strange indeed. Maybe it has something to do with how the gun returns into battery and how the barrel sits in the gun or something. I'm out of ideas, anybody else? Link to comment Share on other sites More sharing options...
Detlef Posted November 30, 2004 Share Posted November 30, 2004 show us the data, from there we can go. Myth or fact? Link to comment Share on other sites More sharing options...
Flexmoney Posted November 30, 2004 Share Posted November 30, 2004 Pulling the trigger on a Glock works against the recoil spring/slide. With the Glock...the recoil spring is doing all the work of holding the slide and barrel in lock-up. Pulling the trigger...pulls back on the striker tang...which is located in the slide....so, the force applied to the trigger to overcome the cocking/break of the striker is also the force that is working against the recoil spring (holding the gun in lock-up). There is a slight chance that, with certain combinations of springs, there can be a bit of unlocking going on. Or, the strong recoil spring is putting the gun in lock-up better. I wouldn't begin to say that this was a true factor. However, it is a possibility. Link to comment Share on other sites More sharing options...
Flexmoney Posted December 1, 2004 Share Posted December 1, 2004 Also, there is often enough slide to frame slop that pulling the trigger actually moves the slide up and down on the frame rails a bit. Could be that the heavier recoil spring is fighting this to some extent. Link to comment Share on other sites More sharing options...
Detlef Posted December 1, 2004 Share Posted December 1, 2004 yes, I noticed pulling the trigger on a (chamber empty) Glock moves the slide... Link to comment Share on other sites More sharing options...
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