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  • DyeF9

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    OK. Got it. But neither of those cases is under consideration.

    Really? The original question was:
    Emphasis added.

    So, isn't shooting a firearm underwater a good way to demonstrate that atmospheric oxygen isn't required for the process? If not, then I seem to be missing something.
    Water contains atmospheric oxygen. A vacuum would have little to no atmospheric oxygen
    Texas SOT
     

    benenglish

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    You're making me want to call up my old high school physics and chemistry teacher. :)

    Thanks.
     

    SQLGeek

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    Apologies for bringing this thread back on topic but does RIA still make the MAPP series in 22TCM9R? Gallery of Guns has it listed but is out of stock. RIA doesn't even have it on their website, only in 9mm.

    I also can't really tell if RIA still makes a single stack 22TCM 1911. This is making me wonder if support the cartridge is waning.

    Edit: Just checked gun.deals. Uh oh.

    https://gun.deals/search/apachesolr_search/4806015519737
     

    Younggun

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    I don’t think the 9R ever got much following over the regular TCM.

    The single stack version always seemed less popular than the double stack as well. That said, the TCM did make a splash that quickly became a ripple, but has held steady as an oddball curiosity for years. Most I’ve seen were the RIA double stack 1911s with 9mm conversion which look to be readily available online.


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    DyeF9

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    You're making me want to call up my old high school physics and chemistry teacher. :)

    Thanks.
    The oceans and lakes are oxygenated by the atmosphere due to a difference in oxygen concentrations. The surface of the water will dissolve atmospheric oxygen into them with movement on the surface water. They also have oxygen dissolved into them by plants and photosynthesis.

    All in all, it is safe to say that firearms will function in whatever natural environment because gunpowder has everything it requires for combustion and is pretty stable.
     

    SQLGeek

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    I don’t think the 9R ever got much following over the regular TCM.

    The single stack version always seemed less popular than the double stack as well. That said, the TCM did make a splash that quickly became a ripple, but has held steady as an oddball curiosity for years. Most I’ve seen were the RIA double stack 1911s with 9mm conversion which look to be readily available online.


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    Interesting. So what's left of 22TCM seems to have settled on the doublestack 1911s and their bolt guns then.

    As interesting as the cartridge is, I'm wondering if it's wise to jump into it now. There is ammo still being made though so that's a good sign at least.
     

    Lost Spurs

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    Yes. Absolutely.

    My biggest facepalm moment with the sci-fi series Firefly was when Jane said he couldn't fire his rifle, Vera, without air. They put the rifle in a space suit to shoot it. I have no idea why; the plot didn't need that problem and it was garbage from a firearms viewpoint. Why the tech adviser on site didn't catch it, I don't know.
    Just watched the video. I grabbed a pic from just after the 1 minute mark describing the special under water silencer they used. It is a technically accurate render. That 9mm glock uses special ammo.
    52bced1786acf7d2608b0bad438c7523.jpg


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    Younggun

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    Just watched the video. I grabbed a pic from just after the 1 minute mark describing the special under water silencer they used. It is a technically accurate render. That 9mm glock uses special ammo. View attachment 198209

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    Lol, that is some special ammo. Only remember one gun ever using that particular method of propulsion.


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    Dawico

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    Interesting. So what's left of 22TCM seems to have settled on the doublestack 1911s and their bolt guns then.

    As interesting as the cartridge is, I'm wondering if it's wise to jump into it now. There is ammo still being made though so that's a good sign at least.

    Now that I have one I see them everywhere. The full sized 1911s seem to be mainly single stack models.
     

    Dawico

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    I must admit, Armscor has introduced the 22 TCM the right way.

    While the factory ammo isn't super cheap, it isn't too bad either. The biggest thing is cheap and readily available componants for the reloaders.

    ~$0.40/ round for factory but they can be loaded for close to 9mm prices. I think reloaders are more apt in general to adopt new rounds if they can load them cheap. This I think has helped keep sales up for it.

    Many new rounds are introduced with only expensive factory ammo and little to no componants available. This really keeps a new round from taking off. This sure isn't the case here.
     

    Dawico

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    Dawico

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    I hadn't heard of those so I did a little research. It's too bad they aren't more affordable. Instead of being just a barrel swap, there's a whole slide that comes in the kit.

    Still, I'm intrigued. I can definitely see a use for it as a way to introduce students to blast and flash without introducing recoil. IMO, new shooters profit greatly by understanding the difference between those things.
    Price checking at Bud's actually shows conversion barrels for Glock 17s and 19s.

    Much more affordable than the whole slide assembly conversion.

    I might need one and they say the barrels fit all generations of Glocks.

    Edited to add: the G19 barrel shows one one star review but there aren't actually any reviews. It's a question asking about generation fitment.

    1bb270467304f849411b7d20b71c0b2c.jpg
     

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    SQLGeek

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    Price checking at Bud's actually shows conversion barrels for Glock 17s and 19s.

    Much more affordable than the whole slide assembly conversion.

    I might need one and they say the barrels fit all generations of Glocks.

    Edited to add: the G19 barrel shows one one star review but there aren't actually any reviews. It's a question asking about generation fitment.

    View attachment 198240

    Hmmm wonder if the G19 barrel would work with a Glock 45?

    Another interesting idea is to do a P80 build with a 22TCM slide assembly.
     

    benenglish

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    I might need one and they say the barrels fit all generations of Glocks.
    After looking at a bunch of sites and digging up some old SHOT reports, etc., it appears that these barrels came out ~2015 and were soon replaced with the complete top-end kits that include slides. Apparently, they fit Gens 1, 2, and 3 per the original announcements. They also nominally require the 22TCM9R ammo to function properly.

    With all that said, I have a Gen 1 G17 in the house. Hmmm.
     

    Dawico

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    After looking at a bunch of sites and digging up some old SHOT reports, etc., it appears that these barrels came out ~2015 and were soon replaced with the complete top-end kits that include slides. Apparently, they fit Gens 1, 2, and 3 per the original announcements. They also nominally require the 22TCM9R ammo to function properly.

    With all that said, I have a Gen 1 G17 in the house. Hmmm.

    Did a little more research on this. Here is a picture comparing the 22TCM round versus the 22TCM9R round. The 9R is the same everything except a different profile bullet to fit in 9mm magazines. (This confirms the rumor that my magazine is a modified 38 Super mag and not a 9mm mag.)

    Reloader could seat projectiles deeper to overcome this as the cheap projectiles in the site above do not appear to be the 9R style.

    I also found a Glock barrel fitment chart. It appears that all G19 barrels fit all generations.

    The Gen 5 G17 and G34 are the only oddballs. Gen 1-4 fit each other but the Gen 5s are different.
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    Dawico

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    Hmmm wonder if the G19 barrel would work with a Glock 45?

    Another interesting idea is to do a P80 build with a 22TCM slide assembly.
    My research confirms that any G19 barrel will fit and work in a G45.

    See the above chart that shows all generations of G19 barrels are the same.

    Because you would be using 9mm magazines you would be limited to the 22TCM9R ammo or have to handload the standard projectiles shorter to fit and function.
     
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