Posted: 10/18/2016 2:39:54 PM EDT
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Took my Colt GCNM out today, shot 75 rounds of 230gr ball.
Twice, with two different mags and two different brands of ammo I experienced the following: -Fire next to last round -Slide locks to rear -Last round from the mag is resting loose on top of the magazine, behind the chamber The ammo (both 230gr FMJ): Federal American Eagle Speer Lawman The Mags: Colt 7rd, hybrid lips Chip McCormick Shooting Star Gun has less the 500 rounds through it. I doubt either mag is over 2,000. I'm thinking weak mag springs, causing the mag to lose control of the last round under recoil - kinda surprised to get that with the dimpled follower though. Anything else I should check out? |
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Quoted:
The Colt standard, 16lb aren't they? (It's not the green marked light spring) Quoted:
Quoted:
What weight of recoil spring is installed? The Colt standard, 16lb aren't they? (It's not the green marked light spring) Generally. I understand the GCs came with a 14# spring. My theory is that the spring is allowing the slide to give the frame a pretty good smack at the end of its travel, jarring the last round loose. Do the followers have dimples? |
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Quoted:
Generally. I understand the GCs came with a 14# spring. My theory is that the spring is allowing the slide to give the frame a pretty good smack at the end of its travel, jarring the last round loose. Do the followers have dimples? Quoted:
Quoted:
Quoted:
What weight of recoil spring is installed? The Colt standard, 16lb aren't they? (It's not the green marked light spring) Generally. I understand the GCs came with a 14# spring. My theory is that the spring is allowing the slide to give the frame a pretty good smack at the end of its travel, jarring the last round loose. Do the followers have dimples? The new ones come with two recoil springs, a standard Gov't Model spring and a lighter spring (I've heard both 12 and 14 pound) with a green marking. Regular one is what's in it. I'll probably replace it with a Wolff anyways though, as your theory is sound. Maybe an EGW firing pin stop at some point too. The Colt mag does have a dimple, but upon closer inspection tonight it appears one of the feed lips is flared outwards, so I'm betting that was a contributing factor. No dimple on the CM mag. |