Glock 30 & Cast Lead Bullets

Discussion in 'Handguns: Autoloaders' started by Charlie Martinez, Aug 2, 2022.

  1. Charlie Martinez

    Charlie Martinez Member

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    I was watching the great Hickok 45 yesterday while he was testing a Glock 30. Hickok mentioned during the test that he did not shoot lead cast bullets through the original Glock 30 barrel. He said that whenever he wanted to shoot lead bullets he would switch to an aftermarket barrel. He didn't say why.
    Can someone please explain that for me?
     
  2. lysanderxiii

    lysanderxiii Member

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    Polygonal rifling and cast lead bullets are not a good idea.

    More on the subject
     
  3. 4v50 Gary

    4v50 Gary Moderator Staff Member

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    Ditto above. Use an aftermarket barrel for cast bullets. Lead builds up on polygonal bores and then pressure increases. Then it can go kaboom.
     
  4. Skylerbone

    Skylerbone Member

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    Adding to the above, many polygonal barrels, Glock among them, allow for a better gas seal which naturally leads to higher velocities and pressure, with or without leading.

    People have run lead through successfully, been debated many times here, including by those who “shoot the lead out” by running jacketed bullets after to sweep residual lead from the barrel. Talk about pressure spikes.
     
  5. CoalCrackerAl

    CoalCrackerAl Member

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    My Caniks have polygonal bores. They lead up with cast.
     
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  6. Master Blaster

    Master Blaster Member

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    I ran thousands of rounds of my cast lead reloads through my G26, G34, and my G30 and G41, the lead build up never happened with my guns. You can do it safely with reasonable loads and good lube or even the powder coating. You just need to clean and keep an eye on it. I did have a Beretta 92 with conventional rifling that leaded up after 20 shots so bad that the bullets hit the target sideways and the barrel had visible shreds of lead in it. Very scary. These days plated are almost the same price as hard cast lead, so I haven't shot any out of my 41 recently
     
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  7. Charlie Martinez

    Charlie Martinez Member

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    Understood. Thank you.
     
  8. murf

    murf Member

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    this, if you shoot lead through the stock barrel.

    lead is soft, malleable and has a low melting point. these qualities allow the lead, as opposed to the guilding metal of jacketed bullets, to easily rub off on the smooth undulating bore of the glock.

    hickok45 found that running even heavy, heat treated lead through a stock glock barrel at high velocities resulted in leading and target key-holing with very inaccurate results. the accuracy came back when a traditional lands-and-grooves barrel was used.

    my take on the reason why the traditional barrel stopped the leading and key-holing is the lands of the barrel gave the smooth lead something to "grab onto" while traveling down the barrel.

    luck,

    murf
     
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  9. blue32

    blue32 Member

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    I'm guessing Hickock used the wrong size bullet or too hard of an alloy for the pressure. Maybe he over crimed - who knows. I experienced similar results with all commercial cast bullets.

    My experience:
    9,608 RCBS 45-230RN through a stock barreled gen 3 Glock 30 over 4.5 gr WST. No leading and great accuracy. If it wasn't for the powder and lube residue I would never clean it.
     
  10. Dan-O

    Dan-O Member

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    When was the video taken? If you go back to some of his older vids, he shoots oodles of lead through stock glock barrels. This was before he was giving shout outs to buds, federal, etc.
     
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  11. Skylerbone

    Skylerbone Member

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    I think most guys who shoot lead long enough know that taming velocity and running softer alloy leaves the barrel near whistle clean. Whether for personal gain promoting ammo companies or having no intent to explain to the general viewing audience the intricacies of reloading, Hickok has chosen the safest route: follow manufacturer’s recommendation. Still, I don’t recommend it to any who inquire.
     
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  12. jeepnik

    jeepnik Member

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    Hickock mentioned it because he's bought into the BS that Glock put out. LIke all manufactures they don't approve of reloaded ammunition or cast bullets for liability reasons. I shoot cast in my 30 almost exclusively.
     
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  13. JohnKSa

    JohnKSa Administrator Staff Member

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    That's a bit of an oversimplification.

    There's information out there based on pressure testing from independent sources other than Glock. It's not an instant recipe for disaster--the issue is that it can be unpredictable and even minor changes can result in significantly different results. If one is not paying close attention to the right things, the results can be a problem. A lot of people do it and get away with it--so that's certainly possible. Maybe they get a bore that is a little slicker, use an alloy that is really hard or keep their velocities a bit lower, or do any one of a number of things that might keep them from running into trouble. The problem is that someone else may try to do all the same things and get something wrong, or maybe just end up with a gun that is a bit more prone to leading and blow a gun up as a result.

    For example, testing performed by an independent forensic engineer (See The Glock in Competition) found that two apparently identical Glocks shooting the same loading showed dramatically different rates leading--one was building up lead in the bore at a rate 8x faster than the other. That's a pretty significant difference. That would mean, for example, that one range session you could shoot 200 rounds through a Glock, then shoot only 100 of the same rounds through an apparently identical pistol and end up with 4x the amount of leading buildup. Or maybe shoot 400 of the same rounds through a different apparently identical pistol and end up with 4x less leading buildup.

    That kind of variation means that it's hard to come up with a recipe that says: Do X, Y, and Z and you'll be safe. Someone might follow instructions perfectly and still end up with a busted gun. It also means that what one person does and gets away with--even for a long time--isn't a guarantee that if someone else does the same that they will also get away with it.

    It's also worth noting that detecting leading can be tricky for some people which makes advice to check for leading of questionable value. I've run into people who swore that they had barrels where the rifling was completely shot out but it turned out that there was just really bad leading. The already smooth contours of the Glock barrels can make this even more of a problem.

    So is it a really scary problem that frequently causes guns to explode? I don't think it is--a lot of people do it and get away with it. But it isn't just BS either and it isn't just about the typical manufacturer recommendation against reloads. It can and has verifiably caused some catastrophic incidents over the years. I just see it as something to be aware of--it's always a good idea to make informed decisions.
     
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  14. murf

    murf Member

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    i clean the barrel once in a while. 0804220654.jpg 0804220654a.jpg 0804220655.jpg

    luck,

    murf
     
  15. Skylerbone

    Skylerbone Member

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  16. murf

    murf Member

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    plus the fact that the gun has an alphawolf barrel because i also shoot 45 super loads in that gun. my glock19 shoots lead bullets, too, even before it got a lonewolf barrel. glocks have a reputation of running forever without maintenance or cleaning. the key is to clean it once in a while.

    murf
     
  17. reddog81

    reddog81 Member

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    Back in the day he'd have buckets of reloads sitting out on his table. Now it's all factory ammo he gets for free and is paid to promote. Of course he's going to recommend people go out and buy ammo and new barrels.
     
  18. Ks5shooter
    • Contributing Member

    Ks5shooter Contributing Member

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    Don't push your lead reloads too fast, and clean your barrels after you shoot.
     
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