EPIC glock Bulge with Doubletap 255 +p Glock 30

Discussion in 'Handguns: Autoloaders' started by 1KPerDay, Jul 7, 2017.

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  1. LoonWulf
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    LoonWulf Contributing Member

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    Im very curious as to the actual velocity (not that i think you should keep shooting that ammo in your gun). Quickloads think you should be able to reach that velocity with a 255 lead SWC and long shot within +P pressure limits. Ive shot 230s XTPs out of my stock XD barrel at 1150 and have seen nothing like that. Granted the XD provides full support, and i was running a 28Lb recoil spring.
     
  2. 460Shooter

    460Shooter Member

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    On the up side, trigger pull weight and trigger discipline become irrelevant when you're trying to shoot with a hook hand.

    Your off hand shooting will also excell! However you better stick a wine bottle cork or a rubber stopper on the end of the hook or your new shooting hand will get torn to crap.

    "Who's that guy shooting with a hook hand?"

    "That's 1Kperday. Yeah, he quit shooting +p a few years ago."

    :D
     
  3. Shaq

    Shaq Member

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    Cute, but I'd be more concerned about losing eyesight than a hand. When a gun explodes, there will be high-speed metal fragments & the shooter doesn't get to decide where they go or what they hit. Beginning shooters don't realize that a gun is basically a bomb that you set off a few inches from your face. A firearm is designed to handle a certain amount of pressure, depending on the caliber; when you go above that, it becomes a pipe bomb. A case that is bulged that bad is a warning of excess pressure or pressure that is not being completely contained. When the case ruptures, the firearm will be forced to handle the extra pressure that the case should have contained. There is a variation in strength from case to case, even with the same brand & lot. A combination of a weaker case & an overload can ruin your day....and your life. A face full of metal fragments is hardly worth a bit of extra power.
    One range I attended had a gun on display that exploded, along with a sign: "This shooter lost three fingers and an eye."
     
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  4. JeffG

    JeffG Member

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    Plain and simple; that stuff is too hot.
     
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  5. maxxhavoc
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    maxxhavoc Contributing Member

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    The Internet says shooting cast bullets out of your Glock is fine. Glock says it isn't. I'm not taking either side, but I will say that if you are going to do it, do not use heavy-for-caliber bullets in a +p loading when you do. Double Tap says those bullets will not lead your barrel, from your post it sounds like they are leading the barrel.

    I would try getting a third-party barrel for these rather than buying a new pistol. Other brands have barrels with traditional rifling and full case support. I think both will improve your experience. Worth a shot for the price.

    Either way, stop shooting it as-is. You are very lucky...don't push it.
     
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  6. Vern Humphrey

    Vern Humphrey Member

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    I think that gun is firing out of battery -- Glocks will do that. The cause is often fouling buildup in front of the chamber mouth -- which is why Glock advises against using lead bullets, Fouling builds up at the mouth of the chamber and prevents the cartridge from chambering fully. Clean the gun thoroughly and use jacketed ammunition in the future, or get a barrel with standard rifling.
     
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  7. 460Shooter

    460Shooter Member

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    Holy buckets man. You just made a technical correction to an obvious joke geared towards a comment the OP made. I recommend you go drink a beer right now.
     
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  8. 1KPerDay

    1KPerDay Member

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    Not that I can tell. Looks stock. And it was clean.
     
  9. Deaf Smith

    Deaf Smith Member

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    .45 Glocks are known to have unsupported chambers. Even Gen 3s. If you wish to use those DD loads I suggest and extra heavy recoil spring to keep the slide closed longer. It is not firing 'out of battery'. It is opening early due to increased slide velocity.

    I use a 3ed Gen Glock 22, .40 S&W, with 20 lb recoil spring (17 is standard.) The 22 does have the chamber very well supported but with max loads I still want that 20 lb spring. No jams, no malfunctions, even shooting left handed (simulated limp-wrist.)

    Extra heavy recoil spring and clean that barrel up so there is no lead buildup. Try that (but wear a glove just in case!)

    Deaf
     
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  10. armoredman

    armoredman Member

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    Buy a lottery ticket.
     
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  11. rskent

    rskent Member

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    A gun maybe, but not that gun. I’m not sure I see the reasoning behind a 255 grain hard cast bullet in a 45 acp.
    To me there seems like much better hunting (woods carry) rounds out there than 45 acp.
    If you want to shoot heavy hard cast bullets you might want to look at picking up a 44 magnum.
     
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  12. SHOOT1SAM

    SHOOT1SAM Member

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    Assuming it is the well known lack of case support in Glocks, and coupled with DoubleTap's loading right up to the edge...if you're wanting to continue using that load, perhaps a Lone Wolf or KKM barrel with better case support would be the easiest solution.

    Sam
     
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  13. WYO

    WYO Member

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    I would refrain from using any more of that ammo. It has been a while since I shot some, but I do not recall getting any bulging from the Buffalo Bore verson of the same round. I do not have any of that spent brass lying around, but I always check the brass (that I can find). If I get some time this week, I will go out and shoot a few rounds of the Buffalo Bore and get back to you.
     
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  14. LoonWulf
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    LoonWulf Contributing Member

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    I like that solution (obviously since i modded out my XD lol). But i would also suggest getting some heavier recoil springs if your going to be using much +P, or for all intensive purposes +p+ ammo.
     
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  15. 1KPerDay

    1KPerDay Member

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    It appears that the majority of the problem is due to the very generous throating and unsupported chamber of the G30. Pics below. Hopefully you can see but basically everywhere it bulged is unsupported. Also pics of my para ordnance P14 limited which looks to have full case support. I shot one round through the para and there is no sign of bulging whatsoever. Also pics of the G41 chamber which is similar to the G30 with maybe a shorter ramp. Support looks maybe a tad better but not much.
     

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  16. Shaq

    Shaq Member

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    Well, I have two Gen 3 Glock 45's. I stopped keeping track after 4,600 rounds. Never had a bulged case or a malfunction. I only fire standard 45 ACP's & my standard-pressure handloads, along with a few boxes of +P's for testing - no bullets heavier than 230 gr. I haven't changed springs or feel any need to. I don't care whether or not the chamber is supported. I also have a Gen 3 Mod. 22 that I bought new 15 years ago - 2,700 rounds. Never a bulged case or a malfunction & only changed the sights. When something works, I don't believe in modifying it.
     
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  17. LoonWulf
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    LoonWulf Contributing Member

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    Looks like you found your issue, if you still want to use that gun as a trail pistol, probably best to get a fully supported barrel. They are only bout 100-120 bucks unless you get a threaded one.
     
  18. Deaf Smith

    Deaf Smith Member

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    They are known to have unsupported chambers.. not bulged cases. But with heavy leading (as the poster mentioned) and maybe worn recoil springs, it would get those bulges.

    And you are supposed to change the mainspring approximately every 3000-4000 rounds.

    Deaf
     
  19. Vern Humphrey

    Vern Humphrey Member

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    The problem is not just the unsupported chambers, but also the fact the Glock will fire out of battery. Put those facts together with heavy leading, and you have KABOOM waiting to happen.
     
  20. 1KPerDay

    1KPerDay Member

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    FWIW +P 185 and 230 grain loads don't bulge at all. I guess the combination is just too hot for this barrel.
     
  21. Shaq

    Shaq Member

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    That's something else I've never understood. Several years ago when I started hearing that Glocks can fire out of battery, I've tried unsuccessfully to do that. On all six of my Glocks, when I move the slide back slightly, the trigger doesn't work.
     
  22. Shaq

    Shaq Member

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    A Glock rep. told me 5,000 rounds, but they're so cheap, I guess I'll change mine now.
     
  23. Deaf Smith

    Deaf Smith Member

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    Here is how. See once I had a Glock 17 kaboom. Blew the mag out and stung my hand but no other problems. The case had a hole in the bottom near the web. Well I measured the case. Instead of 19 mm it was 21! Yes the case was a bit longer, just a bit, and it was enough to have the slide come back and leave some of the web unsupported while the pressure in the barrel was still high.

    Just needs a millimeter or two and when the slide comes back it will expose some of the case while the pressure is still excessive.

    And THAT is why I went to the 20 lb recoil spring. Delay the opening of the slide a bit so the pressure will come down before unlocking.

    Deaf
     
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  24. tarosean

    tarosean Member

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    time to ditch them sissy pistols... :)
     
  25. JohnKSa

    JohnKSa Administrator Staff Member

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    Be sure you get ALL of the lead out of that barrel before you shoot the gun again, especially if you're going to shoot jacketed rounds. ALL of it, not just most of it.
     
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