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Posted: 9/5/2014 11:17:14 AM EDT
[#1]
I haven't tried my 40's but my 20's and 30's have run flawlessly.
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Posted: 9/5/2014 1:28:43 PM EDT
[#2]
I've used 30 rounders but since I can't afford much 300blk ammo I've never put more than 10 in at a time lol
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Posted: 9/7/2014 6:41:05 PM EDT
[#3]
I use the 10 and 20rd Pmags for my 300BLK when hunting (and when hunting you want NO failures). I've never had a failure with them. Don't have enough experience with the 30rd Pmags to say yes or no when loaded fully.
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Posted: 9/7/2014 7:10:12 PM EDT
[#4]
Both 20s and 30s work fine for me as well.
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Posted: 9/7/2014 7:16:45 PM EDT
[#5]
my 30 round pmags run great
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Posted: 9/7/2014 7:19:35 PM EDT
[#6]
30s GTG. I run 150 gr Hornady SP @2.220 COL.
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Posted: 9/7/2014 7:38:18 PM EDT
[#7]
10, 20, or 30 all work for me, I run some Hornady and some Barnes Vor-Tx. No issues at all.
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Posted: 9/7/2014 9:35:15 PM EDT
[#8]
Straight 20 p mag works great.
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Posted: 9/9/2014 11:47:21 AM EDT
[#9]
Got my 10's and 20's in this past week.......and yes, they work great!!
For what ever reason, I've never purchased 30 rounders.....I know that I have a bunch of Gen 2 30 round pmags, still in the wrapper as I have so many GI mag's that i still use. Yes, this 'pistol' is gonna be used for deer hunting so 10's and 20's is probably all it will ever see. Tim |
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Posted: 9/10/2014 11:17:30 AM EDT
[#10]
Fully loaded 40 round PMAGs have been good to go in my Noveske 10.2 300BLK. Not one failure in 300 rounds suppressed or unsuppressed with both Remington 115 gr super and 220 gr subs.
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Posted: 9/11/2014 11:00:38 PM EDT
[#11]
Quote HistoryQuoted:
Fully loaded 40 round PMAGs have been good to go in my Noveske 10.2 300BLK. Not one failure in 300 rounds suppressed or unsuppressed with both Remington 115 gr super and 220 gr subs. Good to know 
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Posted: 10/9/2014 1:59:08 PM EDT
[#12]
I have used 20 rd Pmags and 20 rd Lancers with no issues for 300 BO
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Posted: 10/9/2014 2:14:47 PM EDT
[#13]
Quote HistoryQuoted:
I use the 10 and 20rd Pmags for my 300BLK when hunting (and when hunting you want NO failures). I've never had a failure with them. Don't have enough experience with the 30rd Pmags to say yes or no when loaded fully. I've got some 10rd pmags for hunting, never loaded a 30rd pmag with .300, they don't drop free from my Seekins forged lower. The Troy Battlemags will drop free and they feed subs and supers just fine in my gun. I've got 5 Troy mags and I have dedicated them to the .300 to avoid mixups. |
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Posted: 10/10/2014 9:53:01 PM EDT
[#14]
Did magpul quit making the pmag for 300 blackout? I can't find them anywhere, even on magpul's website.
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Posted: 10/11/2014 12:04:19 AM EDT
[#15]
Quote HistoryQuoted:
Did magpul quit making the pmag for 300 blackout? I can't find them anywhere, even on magpul's website. They never made a .300blk specific mag, but the M3 mags seem to fit the heavier bullets better. |
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Posted: 10/11/2014 8:28:15 AM EDT
[#16]
Quote HistoryQuoted:
They never made a .300blk specific mag, but the M3 mags seem to fit the heavier bullets better. Quote HistoryQuoted:
Quoted:
Did magpul quit making the pmag for 300 blackout? I can't find them anywhere, even on magpul's website. They never made a .300blk specific mag, but the M3 mags seem to fit the heavier bullets better. Ah, I guess that explains it then! |
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Posted: 10/30/2014 1:12:06 PM EDT
[#17]
So far, I've experienced a more than a few FTFs when loading a Pmag 30 to capacity with 220gr Subsonics. It has to be downloaded to about 22~24 rounds before it cycles reliably. I don't think the spring is strong enough for the heavier sub rounds.
20s work great for subs though. YMMV |
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Posted: 10/30/2014 1:24:21 PM EDT
[#18]
Quote HistoryQuoted:
my 30 round pmags run great |
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Posted: 10/30/2014 1:36:52 PM EDT
[#19]
Quote HistoryQuoted:
Fully loaded 40 round PMAGs have been good to go in my Noveske 10.2 300BLK. Not one failure in 300 rounds suppressed or unsuppressed with both Remington 115 gr super and 220 gr subs. With forty 220's, that's over one pound of lead! 
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Posted: 10/31/2014 7:26:11 AM EDT
[#20]
AAC MPW in 300 Blk. I own and have used USGI, Brownell's branded, Hexmag, Magpul Gen2, Magpul Gen3, Magpul EMAG, Tapco, Promag, CAA (even a couple with the 'Countdown' feature), Lancer and a couple other off-brands; all in 30 round. I have loaded these to capacity and never experienced any issues with feeding 300 AAC 'Blackout' ammunition. I've run commercial loads and my own custom reloaded ammunition, experiencing one failure to feed in the life of the gun (magazine that turned out to be damaged).
One of the perks of the 300 Blackout is the magazine compatibility. Any 5.56 mag should work exactly the same with the ability to go full-capacity on the Mag. -Aaron |
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