I NEED a G20

[revolvercranker]

In Glocks the rim is a slightly snug fit between the extractor claw and the breech face, not much slop there at all. The 1911 is suppose to be just as tight as the Glock, but some aren't. When you're building a 1911 ONE of the tests for the extactor is to see if the extractor holds a loaded cartridge just with the extraction. If it doesn't it isn't adjusted correctly. What I don't like about shooting the 40 in the 10mm is same as shooting 38 Special in the 357 Mag is the carbon ring that you should be cleaning out after a shooting session.

I read about shooting 40's in 10mm on the Brian Enos forum. They talked about the many many practice rounds they have to shoot to stay in shape and loading the 40 is much cheaper then loading the 10mm.

Back to the 1911, but in 45 acp, I believe the lenght of the 45 acp case is .898. Try finding one that is that long. They are like hens teeth. If you can't find cases that length you can build a 1911 that when an empty case is in the chamber the case head is flush with the barrel hood. Then you have to make sure you have cases all the same length as the one you set the barrel chamber up for.

Do I advise shooting 40's out of 10mm, hmmm, not really, but it can be done in a pinch and doesn't appear to be dangerous. You all know that on a 1911 that the firing pin is an inertia one and it can protrude quite a ways out of the breech face, quite a ways. Thank God the extractor has ahold of the case. I don't believe Glock firing pins protrude that far.

[AxeHandle]

Pictures:
10mm in a 10mm barrel

40 in a 10mm barrel

[revolvercranker]

So what's that prove Axehandle? We're talking about the extractor holding the cartridge against the breech face. We know the 40 S&W can't possibly headspace in a 10mm barrel. Is that to show the huge difference in length?

[AxeHandle]

Just showing what we are depending on our extractor to do. Not my circus and not my monkeys... but When I load for a semi auto part of my process is verifying that the loaded cartridge fits in the chamber flush with the barrel hood. Of course my base requirement is 100% functioning and the best accuracy the gun is capable of.

[webber]

I have shot 40S&W in my Glock 29 Gen4 offhand not benched.
Has anyone who does a lot of bench shooting tested the accuracy of the 40S&W in a Glock 10MM?
If so how much difference is there in accuracy?
Is it a large difference, medium difference or a small difference?
How many groups were fired with each caliber to rule out the fluke group?
Was it enough of a sample to justify ones opinion or a quick judgement based on a nearly worthless sampling?
Just wondering.
Another thing if one is against shooting 40S&W in a 10MM are they trying to do better with the 10MM to prove his point or vice versa?
Or did one give equal effort with both to not sway the test in their favor?

[revolvercranker]

Mar 23, 2024 8:08:50 GMT -5 webber said:

I have shot 40S&W in my Glock 29 Gen4 offhand not benched.
Has anyone who does a lot of bench shooting tested the accuracy of the 40S&W in a Glock 10MM?
If so how much difference is there in accuracy?
Is it a large difference, medium difference or a small difference?
How many groups were fired with each caliber to rule out the fluke group?
Was it enough of a sample to justify ones opinion or a quick judgement based on a nearly worthless sampling?
Just wondering.
Another thing if one is against shooting 40S&W in a 10MM are they trying to do better with the 10MM to prove his point or vice versa?
Or did one give equal effort with both to not sway the test in their favor?


I have and found it very worthwhile.  That is they shot darn near like the 10mm would and were what I would call useful if you had to use them. 

[revolvercranker]

Mar 23, 2024 5:51:29 GMT -5 AxeHandle said:

Just showing what we are depending on our extractor to do. Not my circus and not my monkeys... but When I load for a semi auto part of my process is verifying that the loaded cartridge fits in the chamber flush with the barrel hood. Of course my base requirement is 100% functioning and the best accuracy the gun is capable of.

Read you loud and clear Axehandle.  That's what I thought you were doing. I do the same thing. The extractor is up to the task of doing it. It's not under near as much stress as when it's extracting the case. For both those pistols, the 1911 and Glocks, to function correctly and chamber a round the rim of the cartridge much slide up under the extractor hook during the stripping of the cartridge out of the magazine. One of the only scenarios where it would is when the slide comes back from recoil and a cartridge pops up and out of the magazine often due to bad feed lips on the magazing. Then you may have a jam. 

[AxeHandle]

So long as the Browning controlled round feed works all is well. When the slide comes back from recoil and a 40 S&W cartridge pops up and out of the magazine there will be no way for the extractor to snag the case rim. You guys note on page one of this thread that I got a 40 S&W barrel for a G20 too. Didn't go looking for it. Just came with the barrel package deal.

[revolvercranker]

Mar 23, 2024 13:21:48 GMT -5 AxeHandle said:

So long as the Browning controlled round feed works all is well. When the slide comes back from recoil and a 40 S&W cartridge pops up and out of the magazine there will be no way for the extractor to snag the case rim. You guys note on page one of this thread that I got a 40 S&W barrel for a G20 too. Didn't go looking for it. Just came with the barrel package deal.


So far I haven't found that to happen and that's with using 10mm magazines in both the Glock and the 1911. 

[AxeHandle]

Think... Ever had a need to put a round in the chamber and drop the slide? I have. Then I haven't been doing this long.

[webber]

I dont put a round in the chamber and drop the slide.
That is just me though.

[AxeHandle]

put a round in the chamber and drop the slide

Never something I plan either. But in my lifetime, during timed competition, there may have been a time or two when I did. Good thing I wasn't shooting 40 S&W in a 10mm chamber those times.

[AxeHandle]

We could imagine that the 9x25 barrel would fix all this.. Then the 357SIG rears its ugly head.

[webber]

I learned from the much older more experienced many, many, many years ago.
Dont drop the slide unless ammo in the magazine.
If no ammo in the mag I retard the forward momentum of the slide with my offhand.
I am anal about things like that. Then again my wife says I am just anal in many ways

[AxeHandle]

No doubt... Me too, in a casual recreational range visit. However, in the middle of a timed string during a match and it is drop the slide on a round in the camber or lose the match, I have been known to drop the slide on a round in the chamber. I could also easily picture the same situation occurring in a self defense situation. Drop the slide or lose your life.