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Posted: 7/8/2017 2:15:37 PM EDT
[#1]
You realize 5.56mm and 300blk use the same Pmags?
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Posted: 7/8/2017 2:25:51 PM EDT
[#2]
Quote HistoryQuoted:
You realize 5.56mm and 300blk use the same Pmags? It's a good design and I'm glad Magpul made it. |
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Posted: 7/8/2017 4:20:25 PM EDT
[#3]
I need a few in MCT or FDE. I can't find any.
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Posted: 7/9/2017 12:23:51 AM EDT
[#4]
Quote HistoryQuoted:
You realize the PMAG 300B has a different internal geometry than a 5.56mm mag for enhanced reliability with weird 300BLK bullets, plus has a different external design to give an extra factor of safety against loading the wrong round in the wrong gun? It's a good design and I'm glad Magpul made it. So other than the external design it seems like a waste for different magazines. All my 300 blk are marked with rubber bands and on the dot matrix on the exterior of the magazine. But I guess more power to you. |
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Posted: 7/9/2017 12:56:31 AM EDT
[#5]
Quote HistoryQuoted:
You realize the PMAG 300B has a different internal geometry than a 5.56mm mag for enhanced reliability with weird 300BLK bullets, plus has a different external design to give an extra factor of safety against loading the wrong round in the wrong gun? It's a good design and I'm glad Magpul made it. But I don't feel like spending money on a new set of mags, when I already have so many that run .300 just fine. |
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Posted: 7/10/2017 12:23:08 AM EDT
[#6]
Quote HistoryQuoted:
I need a few in MCT or FDE. I can't find any. |
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Posted: 7/10/2017 1:48:57 AM EDT
[#7]
300 BO looses its usefulness to me at the time 5.56 compatible parts no longer work with it.
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Posted: 7/10/2017 2:19:07 AM EDT
[#8]
had issues with gen2 pmags and 300BO.
Have to mark mags loaded with 300 - so having some that maybe look slightly different might make sense to me. |
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Posted: 7/10/2017 3:23:55 AM EDT
[#9]
I just use my Lancer mags for 300BLK and use my P-mags for 5.56mm
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Posted: 7/10/2017 3:34:50 AM EDT
[#10]
I just use the the FDE mags I already had now for that round identification. But tag still interested in more info on these new purpose built ones...
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Posted: 7/18/2017 10:24:00 PM EDT
[#11]
Just got an email from Magpul, .300 BO mags are shipping now.
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Posted: 7/23/2017 2:22:58 PM EDT
[#12]
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Posted: 8/16/2017 8:41:49 PM EDT
[#13]
Brownell's is now shipping them.
Mine came in yesterday. |
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Posted: 8/16/2017 10:20:58 PM EDT
[#14]
I got 3 of them about 2 weeks ago. They have black followers marked with "300". They seem to run fine the couple times I've used them at the range.
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Posted: 8/17/2017 9:58:44 AM EDT
[#15]
Can you take some picture of them next to a 5.56 mag? Curious how the ribs in the mag differ.
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Posted: 8/17/2017 11:33:23 AM EDT
[#16]
FWIW:
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Posted: 8/17/2017 4:12:24 PM EDT
[#17]
Quote HistoryQuoted:
Can you take some picture of them next to a 5.56 mag? Curious how the ribs in the mag differ. 
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Posted: 8/17/2017 9:53:23 PM EDT
[#18]
Quote HistoryQuoted:
300 BO looses its usefulness to me at the time 5.56 compatible parts no longer work with it. |
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Posted: 8/17/2017 11:28:44 PM EDT
[#19]
Oh, my 5.56 pmags work with 300BLK
These seem to work better though with certain weights and types of bullets. Especially when reloading you don't have to worry about seating to a shorter OAL so the olgive doesn't ride on the rib of the mag and get pushed out if alignment |
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Posted: 8/17/2017 11:48:36 PM EDT
[#20]
Quote HistoryQuoted:
This If you are having problems with your magazine and the 300BLK it is probably because you didn't reload it to the proper size. |
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Posted: 9/18/2017 10:11:00 AM EDT
[#21]
Quote HistoryQuoted:
This Quote HistoryQuoted:
Quoted:
300 BO looses its usefulness to me at the time 5.56 compatible parts no longer work with it. |
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Posted: 9/18/2017 10:14:30 AM EDT
[#22]
Quote HistoryQuoted:
Shot over 10,000+ rounds through standard mags without any problem using lancer, magpul gen 2 & 3 some windowed and D&H aluminum mags. Some had green followers, some had magpul followers, I had both gen 1 lancers and gen 2 lancers. If you are having problems with your magazine and the 300BLK it is probably because you didn't reload it to the proper size. |
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Posted: 9/18/2017 7:07:55 PM EDT
[#23]
Thermold 20s don't work that well in 300 IME.. everything else does.
To me the 300 Pmags are more about easy ID between calibers. |
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