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bbbrownfield

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Reply with quote  #1 
The 300 Blackout magazine is superior to the 5.56 magazine for use with .277 Wolverine and 7.62x40 in the way that the cartridge guides are molded into the mag. They don't force the cartridge toward the center of the magazine like a 5.56 mag, and they load and function easier for both you and your rifle. The 300 Blackout magazine will not allow the bullet of round #2 to rise up to the same height as round #1 and stay there, which some 5.56 mags will if you are not careful.
The 300 Blackout magazine- it's not just for Blackouts any more...

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BIGGDAWG

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Reply with quote  #2 
i  totally agree, i picked up 10 of them they work excellent for the mongoose and Ocelot also only draw back is the 2.26 oal but for the x40 and other 223 cats they are just what the doctor ordered.  i have not had any issues with wolverine in any mags but why stock 2 types of pmags.
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Bajabusdoc

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Reply with quote  #3 
How does it compare to wilson/lancer x40 mag?

edited I like 10 rounders as they don't monopod on magazine 
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BIGGDAWG

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Reply with quote  #4 
Quote:
Originally Posted by Bajabusdoc
How does it compare to wilson/lancer x40 mag?


way cheaper and works excellent can load a full mag with no malfunctions.

my lancers are ok but you can almost buy 2 of the pmags to one of the lancers and i think the pmag is better.

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Dvalin

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Reply with quote  #5 
Are they only making 30s at this point?
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bbbrownfield

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Reply with quote  #6 
I've only seen 30-round mags, but if enough interest is shown I'm sure they'll make smaller ones.
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battle rattle

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Reply with quote  #7 
after i posted about the BO mags i realized that the Wolverine doesn't need the modified internal rail at all,
it was in the original design parameters that the ogive does not foul the internal magazine rail

how much projectile does it take to push the mag rail in the Wolverine?
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MDWS

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Reply with quote  #8 
O don't recall the WLV having any issues with any standard 5.56 mag including BETA, etc.

Now, maybe the x40 and others could use that, but the WLV doesn't need it.

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bbbrownfield

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Reply with quote  #9 
Mark, I'm not saying they don't work. But the 300 Blackout is the clearly superior magazine, even for the Wolverine.
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bbbrownfield

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Reply with quote  #10 
This happens to me with every round I load- the round sits on the top of the molded ridge like it belongs there- I push it down and inward, and it snaps into place in the magazine (300 BO mag can't even be forced to do this). You know, I know and most of the people on this forum know you can't have this situation, bad things can happen. You can't, however, expect everyone to know what we know. I'm simply saying that with more and more people getting interested in it, and SAAMI and gunmakers, you've got to make it as idiot-proof as possible. Stupid is as stupid does, and inexperience is just as bad...and there's more stupid inexperienced AR15 newbies coming when the Wolverine hits the broader market.
Magpul Gen3 magazine, by the way.

IMG_2693.jpg  IMG_2694.jpg 


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bbbrownfield

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Reply with quote  #11 
Found that using a fine file one can put a chamfer on the rail to prevent 2 bullets at the same height. The chamfer needs to be approximately .06" (1/16) x .25" (1/4) at the top of the internal rail.
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Rifter

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Reply with quote  #12 
I've got 15 Magpul 30 rd mags with the window, which I'm sure are a mix of Gen 1, 2, and 3 as I got them over a period of several years.  Most were purchased for use with the 5.56, but since I sold that they have been used for the Wolverine since its came along.  I have not had a single problem with any of them as described in this thread.  I'm not sure this is a mag problem since so many people have and use these mags and have not reported this problem.  Or it may be just the result of manufacturing tolerance stacking.

I've had magazines in the past for other guns that looked virtually identical to other mags that worked perfectly but just didn't measure up no matter what I did to them.  I ended up smashing them flat and discarding them. 

So, I don't know what the answer is, but I'm not going to start altering my Pmags without more definitive proof that there's a problem.

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bbbrownfield

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Reply with quote  #13 
Do it or don't do it- makes no difference to me.
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Rifter

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Reply with quote  #14 
Quote:
Originally Posted by bbbrownfield
Do it or don't do it- makes no difference to me.

Not busting your chops here, just trying to throw some more experience into the mix.  I'm not the only one who said they didn't see the problem. 

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northern shooter

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Reply with quote  #15 
I too run Magpul mags with my 277WLV. Never a problem,nothing to fix 5-30 rounds.
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bbbrownfield

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Reply with quote  #16 
My chops aren't busted- I really don't care. If you don't have a problem, please disregard this post. If you do have a problem this is a simple fix.
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BIGGDAWG

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Reply with quote  #17 
LIke i stated earlier these mags are great for all the 223 based wildcats on the ar15, i don't think most of the wolverines need them they run fine in standard mags but they run the mongoose, ocelot and x40 10 times better than anything else out there. 

now there is a difference between need and want. i have yet to check how the wolverine does in them but would think they would be just fine too. 

guys he is just trying t help don't be giving him grief. if you like what you run run it if you want to try something new give these a try especially if you run one of the other cats. the rounds stack much better in them versus a standard mag.

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jerdebson

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Reply with quote  #18 
Too bad we can't have them in Colorado I would buy a few.
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Carl S.

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Reply with quote  #19 
Has anyone experimented with the D&H Ind. 300 BO mags with .277WLV 6mm Mongoos, and/or 7.62x40WT??
https://www.brownells.com/magazines/rifle-magazines/magazines/ar-15-300-blackout-magazines-w-red-follower-prod95436.aspx?avs%7cMake_3=AR-15&avs%7cManufacturer_1=d%26h+industries%2c+inc.
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bbbrownfield

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Reply with quote  #20 
I'm going to get a 10 and 20 round, see how they stack up with the 30 round Magpul 300BO magazine. Must be something fairly new, when I was shopping for 300BO mags, and it wasn't long ago, the only ones available were Magpul and only 30 rounders.
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battle rattle

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Reply with quote  #21 
https://dh-tactical.com/product/300-blackout-magazine

" The D&H .300 Blackout optimized magazine features high visibility badging for quick identification, a proprietary follower design and has been dimensionally adjusted to perform specifically with the full range of.300 Blackout rounds. Available in 30, 20 and 10rd configuration. "

the rail sure looks just as pronounced as a 5.56" mag?

could the rail be moved forward in comparison to 5.56" and may still be an issue with other 'cats?
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bbbrownfield

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Reply with quote  #22 
On the Magpul, the internal rail is a bit smaller both in height and width to accommodate the 300 bullet. But the front edge of the rail is in the same place as a 5.56 mag. Probably the same with the DH mag.
I only have experience with the x40 and Wolverine, but Bigdawg says they run all of the wildcats 10X better than anything else out there and I believe it. They are easier to load, too.

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bbbrownfield

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Reply with quote  #23 
The rail on 5.56 is straight, it normally bears against the neck of the cartridge, which is .254 dia or .127 radius more or less. A 33BO round is .308 or .154 radius, a difference of .027", almost 1/32". On all of the wildcats you shorten the case, which means the internal rail now bears on the bullet. A straight rail against a curved surface means bearing at one point at the rear of the rail rather than full length. They reshaped the rail to account for both the dimensional change and the shape of the bullet.
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Carl S.

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Reply with quote  #24 
I received my BO 300 PMAG today and loaded it with 4 rounds of 277 WLV 90 grain TNT. I then loaded a PMAG gen 2. I noticed that the top cartridge bullet tip set just slightly elevated compared to the gen 2. I pulled out Hexmag, an AMEND 2, and a Troy. The bullet tip had a very similar orientation to the Gen 2 PMAG. I then slid the cartridges out by hand. On the AMEND 2 the casing caught on the front lip. On the Hexmag the casing caught on the internal rail and now I understand why Cotton 68 SPC threw his Hexmag over the hill in his latest video .277 WLV sub's. The Troy had a little resistance on the front lip. The PMAG Gen2 had no resistance. The PMAG 300, I thought they slid out slightly better. So then I took 4 rounds of 5.56 55grain FMJ and they slid out of all the mags with no resistance. At the range I have been using an NHMTG 20 round mag without issue with the .277 WLV. The Hexmag is a Gen2.
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17WSM

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Reply with quote  #25 
Quote:
Originally Posted by BIGGDAWG
way cheaper and works excellent can load a full mag with no malfunctions.

my lancers are ok but you can almost buy 2 of the pmags to one of the lancers and i think the pmag is better.

I've been using the D&H 10 and 20 round 300 BLK mags for my 7.62x40 and find they work better than the Wilson/Lancer magazines.
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