Ammunition & Hand Loading > Cartridge and Shotshell reloading

40S&W in a Glock ?

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unfy:
While looking for 10ga 00buck.... decided early on that I was going to avoid the day being a complete loss and picked up a new-to-me reloading manual while out shopping.

Lee Modern Reloading 2nd Ed.  $17, lotsa and lotsa tables. with lots'n'lots of powder per charge typically etc.

Anyhoo, checking it's 40S&W section, it includes a weird note:


--- Quote ---"Do not use reloads in Glock or similar guns with chambers that do not fully support the cartridge due to intrusion of the feed ramp".

--- End quote ---

My Sig P229 doesn't appear to be affected, but are there glocks out there that the feed ramp extends into the chamber a bit ... thus possibly causing excessive case bulging in those regions or something ?

I'm confused  :-\

jonm:
Yes. The Gen 2s are much worse than the 3.

00BUCK:
Is that for 40S&W only?

I think every 1911 barrel I've ever seen is like this. I've never had a problem with .45ACP reloads - and 10's of thousands maybe 100's of thousands of other people reload for their 1911's - regardless of caliber.

jonm:
the pressures in 40 are the problem with the un supported chamber. it is also an issue with 10mm glocks.

bk09:
I stick to low ends of powder charges for my g23. I also bulge bust every single .40 I have after sizing them. You can tell when you are using the bulge buster on a piece of brass from a glock. Some cases go through with no resistance at all and many of the glock ones take some pushing.

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