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Do you load your AR mags to 30rds, and will your gun reliably strip that top round when fouled? Login/Join 
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Picture of ruger357
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If you're reloading under time/stress 28 is way easier. I've seen so many mags fall out in competition from not fully seating it's shocking.


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Posts: 7964 | Location: Hoover, AL | Registered: November 06, 2006Reply With QuoteReport This Post
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31's the only time I ever had a problem.
 
Posts: 21123 | Location: 18th & Fairfax  | Registered: May 17, 2003Reply With QuoteReport This Post
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Picture of ArtieS
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quote:
Originally posted by 92fstech:
My PSA rifle will work with anything. Our work M400s will close the bolt on a mag filled with 30, but they are a bugger to seat under a closed bolt. Pmags are a little more forgiving than metal ones. Some of our guys inadvertently discovered that you can force 31 rounds into a pmag Roll Eyes, and that will cause all kinds of problems.


Oh, yes. This is true.



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Posts: 12798 | Location: Central Florida | Registered: November 02, 2008Reply With QuoteReport This Post
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How old is the magazine?

Old mags should be downloaded, because the spring steel wasn't as good.

New mags? Download if your rifle works better that way.


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Posts: 27022 | Location: On fire, off the shoulder of Orion | Registered: June 09, 2004Reply With QuoteReport This Post
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With the bolt locked back I’ve not had any issue with 30 rounds in a mag. With the bolt forward, it’s hard to seat a usgi aluminum mag loaded to 30. Magpul are fine either way loaded to 30.

But as a matter of practice, I download to 28 in usgi aluminum mags. Magpul get a full 30.


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Posts: 2327 | Location: The South | Registered: September 12, 2005Reply With QuoteReport This Post
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When the Armorer handed me a GAU-5 and the mags, they were 20 rounders, loaded to 18. I carry that practice over to the 30 round mags, loaded to 28.


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Posts: 16132 | Location: Marquette MI | Registered: July 08, 2014Reply With QuoteReport This Post
Mistake Not...
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Carry/use what works in your gun. Trying to make a point using sarcasm effective now: "Look, I use a gladius because my centurion told me to, and his centurion told him to, plus it's never failed me." is not actually an effective argument.

1) If you have confidence in the gun and it will run only 28, then that.

2) If you have confidence in the gun and it will run 30, then run that.

3) If you have confidence in yourself and can only run 28 because you would lose that edge, run 28.

The 2 rounds will only matter until it ACTUALLY matters, either in competition or the real world. I can game out scenarios were the loss of two rounds in the mag caused the death of dozens just as easily as the reverse (I have a great imagination). But this is just speculation and hypotheticals, not real world. In the real world this seems 100% preference, personal experience, and/or psychology, not an actual, factual thing that can be applied across the board.


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Posts: 1965 | Location: T-town in the 253 | Registered: January 16, 2013Reply With QuoteReport This Post
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I cleaned the rifle. Locked the bolt back, inserted a 30rd mag (with thirty rounds in it), slapped the paddle, and it chambered with authority.

Based on that freshly cleaned and oiled performance, I'd never doubt it's ability to chamber the first round off a 30rd mag. However, it is obvious that, when filth builds up a bit, and lube burns off a bit, I can't always count on that performance.

Considering my use of a silencer, I may start downloading to 28 rounds per mag. The maintenance and oil addition regimen with the can is likely not practical to keep up with, if I want to use 30rd mags fully-loaded, and depend on paddle reload performance.
 
Posts: 2209 | Location: Northeast GA | Registered: February 15, 2021Reply With QuoteReport This Post
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Picture of Perception
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28 because I use pmags and I don't trust the lips long term loaded with the full 30.

My AR has no issues stripping the top round when I've loaded all 30 though, but it's hard to load a full mag on a closed bolt as everyone else has said.




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Posts: 3520 | Location: Two blocks from the Center of the Universe | Registered: December 30, 2004Reply With QuoteReport This Post
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quote:
The maintenance and oil addition regimen with the can is likely not practical to keep up with

That sort of begs the question of what is a good routine suppressed to stay ahead of reliability issues including this one. Maybe a new thread over at suppressed. But I am 100% sure that if you don't clean enough then the bolt isn't going to close on 30 rds. and after enough time maybe less...


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Posts: 11020 | Registered: October 14, 2004Reply With QuoteReport This Post
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