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Old 03-09-2013, 07:51   #1
tacmc6
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bullet setback

Does inserting and removing loaded mags, especially .40 cause bullet setback? I am not talking about chambering, just the mags. I understood it was the constant chambering of the same round that possibly caused setback. Thanks.
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Old 03-09-2013, 08:01   #2
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Originally Posted by tacmc6 View Post
Does inserting and removing loaded mags, especially .40 cause bullet setback? I am not talking about chambering, just the mags. I understood it was the constant chambering of the same round that possibly caused setback. Thanks.
Cambering is the major issue.
Not mag insertion and removal.
The slide force cambering the round is what causes most of the problem.

If you have to re-chamber?
Use different rounds.
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Old 03-09-2013, 12:07   #3
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During mag insertion, bullets aren't affected in any way.

It's getting slammed out of the mag, into the feed ramp (at a slight angle), and up into the chamber that causes setback.
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Old 03-09-2013, 12:47   #4
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You can also hand-load the round into the chamber and then hop the extractor.

Let the slide down Gently on the round, grab the face of the extractor w/ your thumb-nail, pull the extractor out a little bit, and it will jump the case-head and snap into place.

Sometimes, a Little push on the back of the slide is needed to get it over the hump.

The same round can be loaded and unloaded indefinitely w/o fear of set-back.

I load both my G23 and G36 this way. The G23 I keep down-loaded w/ 12, the G36 gets topped off w/ 6.




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Old 03-09-2013, 13:22   #5
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Originally Posted by Glock 23 Nutter View Post
You can also hand-load the round into the chamber and then hop the extractor.

Let the slide down Gently on the round, grab the face of the extractor w/ your thumb-nail, pull the extractor out a little bit, and it will jump the case-head and snap into place.

Sometimes, a Little push on the back of the slide is needed to get it over the hump.

The same round can be loaded and unloaded indefinitely w/o fear of set-back.

I load both my G23 and G36 this way. The G23 I keep down-loaded w/ 12, the G36 gets topped off w/ 6.




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I don't Recommend anybody doing this with their Glocks.
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Old 03-09-2013, 13:26   #6
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For self defense rounds, make sure to buy cartridges that have a cannelure. Less likely to get set back on multiple chamberings. That's why they put them on "Premium" rounds.

Just inserting and removing mags doesn't hurt. As said, it is the repeated chambering.
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Last edited by ipscshooter; 03-10-2013 at 11:03.. Reason: Add chambering comment to actually answer OP.
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Old 03-09-2013, 18:17   #7
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Originally Posted by tonyparson View Post
I don't Recommend anybody doing this with their Glocks.
OK.

And...?




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Old 03-09-2013, 18:26   #8
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Originally Posted by Glock 23 Nutter View Post
OK.

And...?




Nutter
There not designed to do that. You might do it 100 times and nothing go wrong or you could do it once and it messes your extractor up. It's your Glock treat how you see fit.
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Old 03-09-2013, 18:29   #9
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+1, when you chamber the rounds over and over it can cause bullet setback. Inserting a mag will have no ill effects. I have had some 45acp rounds that just looked like heck because I had chambered them so many times for some reason or another, it will raise pressure in the case and provide better circumstances for a case rupture to occur...but then again, I'm a cheap son of a gun and won't waste a round unless it's utterly useless and I have never had one ruptureon me...yet.
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Old 03-09-2013, 18:45   #10
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There not designed to do that. You might do it 100 times and nothing go wrong or you could do it once and it messes your extractor up. It's your Glock treat how you see fit.
Thank You. (I was sure it was FUD)

The extractor is hardened Steel, designed to move in and out against the spring.

The extractor claw length (depth) is only a fraction of the motion range of the extractor itself.

The only Forces applied to the extractor are that of your finger to move the extractor claw out, and that of the unloaded recoil spring barely holding the extractor claw against the case.

It is not forced over, it is hopped over.




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Old 03-10-2013, 17:18   #11
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Inserting mags over and over does nothing to rounds. Also, I thought Mas got a question about round chambering a while back but couldnt find it. Said factory rounds today are crimped better than in the past so re-chambering the same round isn't as much of an issue as it had been.
Quote:
Originally Posted by tacmc6 View Post
Does inserting and removing loaded mags, especially .40 cause bullet setback? I am not talking about chambering, just the mags. I understood it was the constant chambering of the same round that possibly caused setback. Thanks.
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Old 03-10-2013, 17:22   #12
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Originally Posted by joeshdog View Post
Inserting mags over and over does nothing to rounds. Also, I thought Mas got a question about round chambering a while back but couldnt find it. Said factory rounds today are crimped better than in the past so re-chambering the same round isn't as much of an issue as it had been.
For some reason, even with quality ammo, I have found 357 Sig
to be particularly susceptible to bullet set back.

It's my 357 Sig guns, of which I have four,
that seem to require special attention.

Last edited by barth; 03-10-2013 at 17:23..
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Old 03-10-2013, 18:27   #13
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Originally Posted by Glock 23 Nutter View Post
Thank You. (I was sure it was FUD)

The extractor is hardened Steel, designed to move in and out against the spring.

The extractor claw length (depth) is only a fraction of the motion range of the extractor itself.

The only Forces applied to the extractor are that of your finger to move the extractor claw out, and that of the unloaded recoil spring barely holding the extractor claw against the case.

It is not forced over, it is hopped over.

It's pretty common knowledge that you don't want to hand insert a round in the chamber and then drop the slide as you can/will chip that extractor.

I wouldn't give that advice to anybody.
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Old 03-10-2013, 18:35   #14
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Originally Posted by ron59 View Post
It's pretty common knowledge that you don't want to hand insert a round in the chamber and then drop the slide as you can/will chip that extractor.

I wouldn't give that advice to anybody.
I agree. Even dropping water will eventually make a hole in a rock and a rock is a lot harder then water.
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Last edited by tonyparson; 03-10-2013 at 18:36..
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Old 03-10-2013, 18:52   #15
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Originally Posted by Glock 23 Nutter View Post
OK.

And...?




Nutter
A new extractor is a relatively cheap part. If you would rather disregard good advice and damage yours, suggest have a couple replacements handy.

sent via Tapatalk

Last edited by Black&TAN; 03-10-2013 at 19:14..
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Old 03-11-2013, 08:10   #16
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Old 03-11-2013, 08:20   #17
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It's pretty common knowledge that you don't want to hand insert a round in the chamber and then drop the slide as you can/will chip that extractor.

I wouldn't give that advice to anybody.
Though I don't agree with his method either, he never said he lets the slide slam home. He specifies that he manually pulls the extractor out to let it ease over the rim. He probably won't break his gun this way.

If you chamber each round in the mag once, plus the one in the pipe, you can shoot those rounds at the range as target ammo. That helps keep fresh ammo in the gun, minimize the risks of setback, and let you practice with some carry ammo. Just a thought. I hope that made sense.
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Old 03-11-2013, 09:45   #18
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it's very easy to just keep a pattern in your SD ammo box and go through a chambering of each round a few times before finally just popping them off one day

i dont chamber/unchamber everyday, so that method will last for a long time
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Old 03-11-2013, 10:57   #19
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Quote:
Originally Posted by Glock 23 Nutter View Post

The extractor is hardened Steel, designed to move in and out against the spring.
Nutter
Glock extractors have been made from MIM the last few years.

No more hardened steel.
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Old 03-11-2013, 11:11   #20
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Glock extractors have been made from MIM the last few years.

No more hardened steel.
What is MIM?
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