User Panel
Posted: 3/17/2024 9:57:25 PM EDT
I’m a glutton for punishment from gun manufactures. This is the 3rd pistol in 3 years (twice from Colt, now this Glock) that will have to go back to the manufacture, bought new.
Groupings were 8” @ 12 yards using 135gr Nosler and 200gr Montana Bullet Works. Moved COL out, in, tried the full powder charge as recommended by Hodgdon. All were absolute crap groups. Also tried different charges using different COLs. SAAMI: Attached File Glock Perfection. Attached File Attached File |
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The 0.00045 variance on either end from the theoretical cartridge is to account for different manufactuers? Chamber has to physically be bigger than the cartridge if only by a hair, as it is not a close slip-fit
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I would try the gun with factory ammo before sending it back. A box of CCI or Blazer brass.
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How does factory ammo shoot?
Are you flinching or anticipating recoil? Have a good shooter try it with factory ammo |
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Calipers aren't really that precise, you need a mic for real accuracy.
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I mean its a pocket 10mm glock. what did you expect? sub moa?
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I would put some factory ammo through it and have a friend try it too.
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Also, what you're posting are the cartridge specs not the chamber.
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Quoted: I’m a glutton for punishment from gun manufactures. This is the 3rd pistol in 3 years (twice from Colt, now this Glock) that will have to go back to the manufacture, bought new. Groupings were 8” @ 12 yards using 135gr Nosler and 200gr Montana Bullet Works. Moved COL out, in, tried the full powder charge as recommended by Hodgdon. All were absolute crap groups. Also tried different charges using different COLs. SAAMI: https://www.ar15.com/media/mediaFiles/170028/IMG_0042_jpeg-3162198.JPG Glock Perfection. https://www.ar15.com/media/mediaFiles/170028/IMG_0043_jpeg-3162199.JPG https://www.ar15.com/media/mediaFiles/170028/IMG_0039_jpeg-3162200.JPG View Quote You been watching SOTAR? |
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Quoted: I'm a glutton for punishment from gun manufactures. This is the 3rd pistol in 3 years (twice from Colt, now this Glock) that will have to go back to the manufacture, bought new. Groupings were 8" @ 12 yards using 135gr Nosler and 200gr Montana Bullet Works. Moved COL out, in, tried the full powder charge as recommended by Hodgdon. All were absolute crap groups. Also tried different charges using different COLs. SAAMI: https://www.ar15.com/media/mediaFiles/170028/IMG_0042_jpeg-3162198.JPG Glock Perfection. https://www.ar15.com/media/mediaFiles/170028/IMG_0043_jpeg-3162199.JPG https://www.ar15.com/media/mediaFiles/170028/IMG_0039_jpeg-3162200.JPG View Quote |
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I do not see enough information here that would cause me to send that back.
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Lol reloaders.
Spend the money on factory ammo and get back to us. |
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I think the problem is probably the Indian and not the arrow dude. If you’re getting consistently crappy groups from a variety of pistols, you need to shoot more and measure less.
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If you’re not happy with it, send it back.
Or get an aftermarket barrel. |
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From what the drawings say your calipers say the chamber is .003 over but that's not a trustworthy number with how you're measuring that. If anything it's showing it to be very close.
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Whatever you do, please, for the love of god, don't go bug the retailer about it.
Let Glock deal with this bullshit directly. |
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reloads on a pocket pistol and you're wondering why it's grouping bad?
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Well, I'd try some factory ammo and a rest.
8" at 12 yards does not sound correct. If that doesn't help, try decaf or maybe some more vodka for the shakes |
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Quoted: I mean its a pocket 10mm glock. what did you expect? sub moa? View Quote My two 19s get this: Attached File (1 flyer as I got excited on the 5th shot) Recent 1911 load development Attached File I’m not flinching, it does not recoil that much. |
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There is a common denominator here that OP is missing.
I would ask if you want me to have gaston call you, but……. |
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It’s a Glock, it goes bang. That’s what it does. That’s all it’s ever going to do.
If you want a target pistol find an old sig 210. Jmo |
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Quoted: My two 19s get this: https://www.ar15.com/media/mediaFiles/170028/IMG_8072_jpeg-3162228.JPG (1 flyer as I got excited on the 5th shot) Recent 1911 load development https://www.ar15.com/media/mediaFiles/170028/IMG_9628_jpeg-3162229.JPG I’m not flinching, it does not recoil that much. View Quote You're posting the dimensions of the cartridge not the chamber which is right there on the same SAAMI page. If you're reloading and don't understand that there's a difference I can't say I'd have much faith in your reloading or judgement. You came into this thread declaring you already know you need to send it back acting like you have evidence, but you really don't. If it'll make you feel better send it back, but you've shown us no real proof. |
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Furthermore that is not an accurate way to measure chamber dimension with that tool(which I might add is not exactly a precision one).
I'll have Kathryn call you. |
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Glocks are known for increased reliability. Part of that is having a slightly oversized chamber and some loose tolerances. If you want a match fit. Get a match barrel. Your gun is fine. You’re wasting everyone’s time and should feel bad. If you want a match we can laugh at you because of feeding and reliability issues after we go down that route.
You’re also not being consistent with your calipers in how you’re measuring the chamber. I know you’re thinking you’re the genius behind all of the reasons and excuses you have. Reality is you can’t hit shit with it and you’re blaming the tool not the man holding it. |
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I thought you knew what you were doing, until I saw your caliper in action. That's a crap tool and incorrect way to measure that space against the wrong data points.
Stick to factory ammo. |
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Quoted: My two 19s get this: https://www.ar15.com/media/mediaFiles/170028/IMG_8072_jpeg-3162228.JPG (1 flyer as I got excited on the 5th shot) Recent 1911 load development https://www.ar15.com/media/mediaFiles/170028/IMG_9628_jpeg-3162229.JPG I’m not flinching, it does not recoil that much. View Quote View All Quotes View All Quotes Quoted: Quoted: I mean its a pocket 10mm glock. what did you expect? sub moa? My two 19s get this: https://www.ar15.com/media/mediaFiles/170028/IMG_8072_jpeg-3162228.JPG (1 flyer as I got excited on the 5th shot) Recent 1911 load development https://www.ar15.com/media/mediaFiles/170028/IMG_9628_jpeg-3162229.JPG I’m not flinching, it does not recoil that much. You may be a very skilled shooter. You may know what you are doing behind the loading bench. But you don’t have a clue about QC or what is critical for accuracy. You are measuring the ID of a chamber with a cheap POS digital caliper. Never mind that a caliper is not the best way to do that. You are using junk equipment. And that dimension is pretty meaningless to group sizes. It is just too close to be causing your groups. |
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You need to get a proper inside mic if you want a true picture of that chamber.
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You can shoot one gun fine and be terrible with another, especially if it’s more powerful with less grip. You can also just have a bad day. A little dehydrated, nerves, who knows.
I would shoot from a rest and then have a known competent shooter try to eliminate you as the issue. I would also stop with the reloads. That’s another way of eliminating you as the source of the issue. If it’s still bad after that, go ahead and send it back. But what I’m reading is the reason why manufacturers have you ship back on your dime until they determine if there is an issue. 8” at 12yds really requires something to be seriously wrong, and is much more likely to be end user error. |
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