Some people shoot .40 out of their Glock 20s with no modifications whatsoever. Seems to work for them, I've never done it personally. Don't see why it wouldn't work.
https://www.thetruthaboutguns.com/2015/06/jeremy-s/40-in-a-10mm-glock/
That is very very interesting. Wonder if some INGOers do this also? Wonder if it's possible in other guns?
I have seen .380 fired from a Glock 43 and the gun actually ran for a while. We discovered the issue once the gun malfunctioned and I noticed the deformed brass. Please do not shoot .380 in a 9mm or .40 in a 10mm. Yes they are the same diameter bullet. However the cartridge is designed to be held in the chamber because of proper case length. A shorter case will only be held by the extractor. Yes Glock extractors are robust but I still would not recommended doing this. Potentially unsafe...
I have seen .380 fired from a Glock 43 and the gun actually ran for a while. We discovered the issue once the gun malfunctioned and I noticed the deformed brass. Please do not shoot .380 in a 9mm or .40 in a 10mm. Yes they are the same diameter bullet. However the cartridge is designed to be held in the chamber because of proper case length. A shorter case will only be held by the extractor. Yes Glock extractors are robust but I still would not recommended doing this. Potentially unsafe.
Glocks are cheap. Just buy a 10mm and a .40. People are almost giving away Glocks in .40 right now anyway. Oh, and you can always tell who is shooting 10mm. They are the guys diving into the weeds every other shot looking for the spent brass.
What is specifically potentially unsafe about shooting .40 in a 10mm Glock? The .40 is a lower pressure cartridge, and I don't see a problem with the extractor holding the case.
The article I posted has some good info. There are competition shooters that have thousands of rounds of .40 through Glock 10mm pistols without issue. The article explains why it may even be safer to shoot .40 in a Glock 20 than it is to shoot .40 out of a standard Glock chambered for .40 caliber.
If OP is worried about what is likely a non-existent safety issue, there are "conversion" barrels available for the Glock 20 for about $150 or so. No special springs needed. Personally, I'd just shoot .40 through the standard barrel and clean it well before going back to 10mm, much like shooting .357 magnum after shooting a bunch of shorter .38 specials.
Because per the same article you referenced the cartridge “headspaces off the extractor instead of the case mouth”. In my opinion No Bueno.
Why? Seems to work, no failures in thousands of rounds. A .40 cartridge is in the exact same position that a 10mm case would be in, with the exception of the case mouth. What's the issue?
You can find police trade-in cheap G23s all day long, for about the price of any conversion which doesn't work with only a barrel change.Why not just buy a glock in 40? They're pretty cheap right now.
You can find police trade-in cheap G23s all day long, for about the price of any conversion which doesn't work with only a barrel change.
Yes it does work with only a barrel change. A 10mm/40 conversion barrel is about $140. Not that you even need a conversion barrel, as already discussed.
Please send me a link to the G23s available for $139.95. I have no use for .40 at all, but I'll take 5 of them. I'll even pay reasonable shipping.
https://www.lonewolfdist.com/Detail.aspx?PROD=920321
He did say any conversion other then just a barrel change. The 10mm to .49 conversion should be fine. I have used several .40 to 9mm Glock conversions with great success as well. Maybe not $139 but used Glock gen3 22s and 23s can be had for around $350 give or take.
Ad far as used Glock 19s. What people consider to be reasonable and what people want to sell them for are two different matters. Truth is real world street prices are somewhere in between and there are plenty of reasonably priced used Glocks available.
You're right, I misread it. Still, the difference between $139 and $350 is a good amount of ammo. If someone wants a 10mm and wants cheaper ammo to shoot at the range, there is no reason to spend another $350 on a police trade-in .40 that he didn't want in the first place.
I've also put a lot of rounds through .40/9mm conversion barrels in Glocks, with excellent results. They work fine, especially for just range work.
Can a Glock 10 mm accept a Glock .40 SW barrel, recoil spring and magazines so that I can shoot cheaper ammo in it?
I want a 10mm but would rarely shoot it. I'd be more likely to shoot the .40 cal.