[ARCHIVED THREAD] - Giant single-stack AR10 round... (Page 1 of 2)
Posted: 7/12/2016 11:07:11 AM EDT
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Someone with actual measurements and maybe even engineering skills:
How big of a round could be created to work "single stack" in a .308-size AR platform magazine? Like the .50Beowulf et al does in regular ARs. I know it would run afoul of DD laws (and probably common sense), but I'm curious. |
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You could probably neck something down and keep it .50 cal to avoid DD issues.
Edit: Quoted:
I have no idea, but I think that a .308 case necked up to .50 would be neat. I think this would be cooler though if you weren't insisting on single stack in the magazine. |
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Quoted:
You could probably neck something down and keep it .50 cal to avoid DD issues. Edit: I think this would be cooler though if you weren't insisting on single stack in the magazine. Quoted:
You could probably neck something down and keep it .50 cal to avoid DD issues. Edit: Quoted:
I have no idea, but I think that a .308 case necked up to .50 would be neat. I think this would be cooler though if you weren't insisting on single stack in the magazine. Yes a necked-up .308 would be cool.. and probably more useful than the .710 Dongelsaurus (or whatever) I'm thinking about. But I'm still thinking about it. Would 1,000gr bullet be possible? |
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There is a 45 Raptor. I think that is the right mane. 308, necked out straight wall, loaded to 460 S&W loads.
If you could find one of the WSM uppers, I guess it could be necked up for a 50 projectile. 50A.E.? I'd be happy with the 45. Lots of part. I think a barrel swap is the only gun mod. Feed lip mods on the magazine. |
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Quoted:
Yes a necked-up .308 would be cool.. and probably more useful than the .710 Dongelsaurus (or whatever) I'm thinking about. But I'm still thinking about it. Would 1,000gr bullet be possible? Quoted:
Quoted:
You could probably neck something down and keep it .50 cal to avoid DD issues. Edit: Quoted:
I have no idea, but I think that a .308 case necked up to .50 would be neat. I think this would be cooler though if you weren't insisting on single stack in the magazine. Yes a necked-up .308 would be cool.. and probably more useful than the .710 Dongelsaurus (or whatever) I'm thinking about. But I'm still thinking about it. Would 1,000gr bullet be possible? donglesaurus got a true laugh out loud |
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Quoted:
There is a 45 Raptor. I think that is the right mane. 308, necked out straight wall, loaded to 460 S&W loads. If you could find one of the WSM uppers, I guess it could be necked up for a 50 projectile. 50A.E.? I'd be happy with the 45. Lots of part. I think a barrel swap is the only gun mod. Feed lip mods on the magazine. 460 makes more sense out of a rifle, it'd be sweet as hell out of a 10-12" barrel. |
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Some of those are silly looking. |
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500 Phantom. and. 510 Whisper are a couple that come to mind... we've built several 458 and 50 uppers using double or single stack arrangements on the LR/SR chassis....50 is easier just to stay within the DD limits... In my opinion the challenging ones are built on the defunct 30 Remington RAR chassis...a 458 using Rigby brass or 50 using Jeffery brass... |
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Quoted: Makes me wish someone would build a 458 win mag AR |
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I think it would be cool to see a company build AR10's that use the Winchester Short Magnum family of cartridges. These short fat rounds would definitely need to be single stack in the mag. A .300WSM hunting AR that didnt weigh 12 pounds empty would awesome. https://media.midwayusa.com/productimages/880x660/Primary/483/483445.jpg Needs a new bolt/extractor design(just beefier), the ones that exist break extractors left and right. ETA: Remington's SAUM would work a little better here as the case is shorter |
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Makes me wish someone would build a 458 win mag AR That is relavant to my interests sir. I would seriously consider retiring my model 70 if that can be tuned for reliable operation. |
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Needs a new bolt/extractor design(just beefier), the ones that exist break extractors left and right. ETA: Remington's SAUM would work a little better here as the case is shorter Quoted:
Quoted:
I think it would be cool to see a company build AR10's that use the Winchester Short Magnum family of cartridges. These short fat rounds would definitely need to be single stack in the mag. A .300WSM hunting AR that didnt weigh 12 pounds empty would awesome. https://media.midwayusa.com/productimages/880x660/Primary/483/483445.jpg Needs a new bolt/extractor design(just beefier), the ones that exist break extractors left and right. ETA: Remington's SAUM would work a little better here as the case is shorter Are Remington's SAUM cartridges still alive? Cant remember the last time I saw a rifle chambered for one. I always thought the rifles built by Olympic Arms I think that were chambered in winchesters super short mag rounds were pretty cool. But sadly both those rifles and those WSSM cartridges never really caught on. Of course I also thought remingtons .30 Remington AR was a really neat cartridge, but like most good ideas, big green fucked it up and didnt support it long enough to get it off the ground. |
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Quoted:
Someone with actual measurements and maybe even engineering skills: How big of a round could be created to work "single stack" in a .308-size AR platform magazine? Like the .50Beowulf et al does in regular ARs. I know it would run afoul of DD laws (and probably common sense), but I'm curious. I've thought about this, too. SSK Industries got a DD exemption for the 14.5 JDJ cartridge, and they're not a big company. They've developed some other >.50 wildcats, too. They'd be the ones to do it. |
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Quoted:
I think it would be cool to see a company build AR10's that use the Winchester Short Magnum family of cartridges. These short fat rounds would definitely need to be single stack in the mag. A .300WSM hunting AR that didnt weigh 12 pounds empty would awesome.(pic removed for brevity) That's even more interesting to me than a big ol boolit. Has anyone done this with an AR15? Like a .458 SOCOM but with a tiny bullet? |
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That's even more interesting to me than a big ol boolit. Has anyone done this with an AR15? Like a .458 SOCOM but with a tiny bullet? Quoted:
Quoted:
I think it would be cool to see a company build AR10's that use the Winchester Short Magnum family of cartridges. These short fat rounds would definitely need to be single stack in the mag. A .300WSM hunting AR that didnt weigh 12 pounds empty would awesome.(pic removed for brevity) That's even more interesting to me than a big ol boolit. Has anyone done this with an AR15? Like a .458 SOCOM but with a tiny bullet? Remington did with the .30 Remington AR. Olympic arms was making uppers in .243/.223/.25 WSSM for a while. |
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I want that brass, neck it to 308/338 and boom! Short mag AR |
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.300 savage is shorter than .308 winchester already. The .308 design was based on the .300 savage, but the neck on the .308 win is lengthened vs the .300 savage Quoted:
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you could shorten a .300 savage to fit into the AR10 and then probably run Double stack .300 savage is shorter than .308 winchester already. The .308 design was based on the .300 savage, but the neck on the .308 win is lengthened vs the .300 savage Oh dang, I had it backwards. That would have worked better if I had gotten that right... |
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A straight case based on Winchester Short Magnum or Remington Short Action Ultra Magnum brass that head spaced on the neck like .45 RAPTOR would be cool. You might even be able to do a .50 caliber cartridge with a very small neck. We could call it the .51 RAPER |
| The limiting factor here is going to be the inner diameter of the barrel extension. You would have to do something analogous to 458 Socom AR 50 Beowulf with the rebated rim if you were going to do something that had a case diameter that would fit in the 308 magazines single stack. The projectile size could be kept to 50 cal to avoid registry as a DD |
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The legal definiton of a destructive device is actual quite interesting. It is commonly accepted that over 1/2 inch is a DD, unless the ATF grants an exception, or is a antique elephant gun type cartridge, but this is actually not the case. Any rifle could be made over 1/2 inch and would not be a DD. Pay attention to the last sentence.
(2) Any weapon by whatever name known which will, or which may be readily converted to, expel a projectile by the action of an explosive or other propellant, the barrel or barrels of which have a bore of more than one-half inch in diameter (.50 inches or 12.7 mm), except a shotgun or shotgun shell which the Secretary finds is generally recognized as particularly suitable for sporting purposes; and (3) Any combination of parts either designed or intended for use in converting any device into a destructive device as defined in subparagraphs (1) and (2) and from which a destructive device may be readily assembled. The term destructive device shall not include any device which is neither designed nor redesigned for use as a weapon; any device, although originally designed for use as a weapon, which is redesigned for use as a signaling, pyrotechnic, line throwing, safety or similar device; surplus ordnance sold, loaned or given by the Secretary of the Army, pursuant to the provisions of section 4684(2), 4685, or 4686 of Title 10 of the United States Code; or any other device the Secretary finds is not likely to be used as a weapon, or is an antique or is a rifle which the owner intends to use solely for sporting purposes If it is an other device such as a smooth bore, it requires a determination from the ATF. A large bore rifle does not require any determination or exemption. |
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Quoted:
I think it would be cool to see a company build AR10's that use the Winchester Short Magnum family of cartridges. These short fat rounds would definitely need to be single stack in the mag. A .300WSM hunting AR that didnt weigh 12 pounds empty would awesome. https://media.midwayusa.com/productimages/880x660/Primary/483/483445.jpg DPMS used to offer their LR rifles in all the WSM offerings. |
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One step at a time... big and slow leads to smaller (but still pretty damn big) and fast. Quoted:
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make the case big enough to fit singly in an AR10 mag say .700 wide and neck it down to .450 ![]() One step at a time... big and slow leads to smaller (but still pretty damn big) and fast. Yeah but that would be an awesome round
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Quoted:
I think it would be cool to see a company build AR10's that use the Winchester Short Magnum family of cartridges. These short fat rounds would definitely need to be single stack in the mag. A .300WSM hunting AR that didnt weigh 12 pounds empty would awesome. https://media.midwayusa.com/productimages/880x660/Primary/483/483445.jpg These guy make 'em, but they ain't cheap. http://www.ar-10-rifles.com/index.php |
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Awesome, been waiting for this for a long time! Spotter rounds would be a blast! |



