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Author Topic: 300 Blackout question  (Read 12546 times)

robheath

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300 Blackout question
« on: January 01, 2012, 09:09:24 PM »
I hope I don't sound stupid asking this but here it goes.  I'm going to build a 300 Blackout.  If I should put a mag loaded with the 30 cal. ammo in my 5.56.  ( wait for it )  Will the gun go into battery??  I also wonder the other way around.  I guess the 5.56 round would just bounce around the barrel as it heads to the muzzle.  Would the 5.56 case split or would it be worse than that?? Just decided to look like a moron and ask.  Be gentile please  :P
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tombogan03884

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Re: 300 Blackout question
« Reply #1 on: January 01, 2012, 09:16:09 PM »
I do not know.
BUT
I understand the  .300 case is somewhat shorter than the .223  so either one could be a very bad thing.
Both will at best create a jam.
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Big Frank

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Re: 300 Blackout question
« Reply #2 on: January 01, 2012, 09:46:04 PM »
The .223 will not fit in the .300BLK and it looks like the .300 will not quite chamber in the .223.
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bafsu92

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Re: 300 Blackout question
« Reply #3 on: January 02, 2012, 07:16:15 PM »
The 300 will not come close to chambering in a 5.56 rifle which is very good safety wise. On the other hand 5.56 will come very close to chambering in a 300 barrel but it will not go into full battery. Safety wise even if it did the bullet would just come bouncing out like you said but I'm sure it wouldn't be the best thing for your barrel.
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robheath

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Re: 300 Blackout question
« Reply #4 on: January 02, 2012, 07:38:37 PM »
Thanks guys... I was concerned bscause everything is the same except the barrel.  Same mags, same bolt and carrier... Seems extra caution may be needed.
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Sponsor

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Re: 300 Blackout question
« Reply #5 on: Today at 08:16:03 AM »
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tombogan03884

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Re: 300 Blackout question
« Reply #5 on: January 02, 2012, 07:42:44 PM »
Quote from: robheath on January 02, 2012, 07:38:37 PM
Thanks guys... I was concerned bscause everything is the same except the barrel.  Same mags, same bolt and carrier... Seems extra caution may be needed.

Something like only using P mags for .300 and only using Mil Surp aluminum for 5.56
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twyacht

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Re: 300 Blackout question
« Reply #6 on: January 02, 2012, 08:25:52 PM »
Quote from: tombogan03884 on January 02, 2012, 07:42:44 PM
Something like only using P mags for .300 and only using Mil Surp aluminum for 5.56

+1

Or the o' blue masking tape, wrapped around the base,....or green masking tape for the other.. There is a way to easily discern loaded mags.

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bafsu92

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Re: 300 Blackout question
« Reply #7 on: January 02, 2012, 08:52:26 PM »
When I get a chance I'll take some pics of what I did. I dedicated all my FDE P-Mags to 300aac. I then took some number stickers and put "300" on the bottom 3rd of all the mags. I taped off the rest so there is just a small stripe exposed about 1/4" above and below the 300 stickers. I then shot them with flat black duracoat and took off all the tape and stickers. I basically have a 1.5" black band around the bottom of the FDE P-Mags with 300 in the stripe in FDE. It looks really good and reminds me what they're for. When I shot grendel I used all Foliage P-mags for it and had a little blue "G" on those mags.
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robheath

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Re: 300 Blackout question
« Reply #8 on: January 03, 2012, 05:13:50 PM »
Quote from: bafsu92 on January 02, 2012, 08:52:26 PM
When I get a chance I'll take some pics of what I did. I dedicated all my FDE P-Mags to 300aac. I then took some number stickers and put "300" on the bottom 3rd of all the mags. I taped off the rest so there is just a small stripe exposed about 1/4" above and below the 300 stickers. I then shot them with flat black duracoat and took off all the tape and stickers. I basically have a 1.5" black band around the bottom of the FDE P-Mags with 300 in the stripe in FDE. It looks really good and reminds me what they're for. When I shot grendel I used all Foliage P-mags for it and had a little blue "G" on those mags.
 

That sounds cool.  Post some pics so i can steal your idea... ;D ;D
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Tyler Durden

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Re: 300 Blackout question
« Reply #9 on: January 03, 2012, 09:40:00 PM »
on another forum I saw pics of a KABOOMED! AR.  I guess it was  either the .300 Blackout stuck in a 5.56 AR.

I can track down the pics if you really want me to.
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