MarkB Posted April 8, 2013 Report Share Posted April 8, 2013 Hi All, This may have been hashed and re-hashed and I've missed it, but...... I've built an AR308 and a AR243 that shoot great. Wondering if anyone has done a larger caliber (similar to the .450 Bushmaster for the AR15 frame on the larger frame weapon)? Thanks, M Quote Link to comment Share on other sites More sharing options...
EasyEJL Posted April 8, 2013 Report Share Posted April 8, 2013 I know people have talked about the .338 lapua, and the parts are available to do that, but i'm not sure what larger than that. Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted April 8, 2013 Report Share Posted April 8, 2013 Hi All, This may have been hashed and re-hashed and I've missed it, but...... I've built an AR308 and a AR243 that shoot great. Wondering if anyone has done a larger caliber (similar to the .450 Bushmaster for the AR15 frame on the larger frame weapon)? Thanks, M have you checked these guys out? they are the premier big bore specialists. http://www.teppojutsu.com/ Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted April 8, 2013 Report Share Posted April 8, 2013 BOHICA used to make bolt action uppers for AR lowers. I know they were in .50 BMG, .338 Lapua and I think either .408 or .416???? If I remember correctly, they used a side mounted magazine box. They also had a single shot version. Quote Link to comment Share on other sites More sharing options...
george_995 Posted April 8, 2013 Report Share Posted April 8, 2013 have you checked these guys out? they are the premier big bore specialists. http://www.teppojutsu.com/ I wish the 500 phantom became popular. It seemed like a cool cartridge. Quote Link to comment Share on other sites More sharing options...
EasyEJL Posted April 8, 2013 Report Share Posted April 8, 2013 have you checked these guys out? they are the premier big bore specialists. http://www.teppojutsu.com/ damn only 865 for the 458 socom upper complete? Hmmm Quote Link to comment Share on other sites More sharing options...
MarkB Posted April 10, 2013 Author Report Share Posted April 10, 2013 thanks for the responses, guys Quote Link to comment Share on other sites More sharing options...
zipdog Posted August 22, 2013 Report Share Posted August 22, 2013 I bought a .450 Marlin upper from Accuracy systems a few years ago....awesome setup. http://www.accuracysystemsinc.com/index.php Quote Link to comment Share on other sites More sharing options...
98Z5V Posted August 22, 2013 Report Share Posted August 22, 2013 BOHICA used to make bolt action uppers for AR lowers. I know they were in .50 BMG, .338 Lapua and I think either .408 or .416? ??? If I remember correctly, they used a side mounted magazine box. They also had a single shot version. ZEL Custom does this exact thing. http://www.tactilite.com/ 50 BMG, .416 Barrett, .408 Chey Tac, and .338 LM. Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted August 23, 2013 Report Share Posted August 23, 2013 That Taclite T2 looks pretty awesome!! I was just pricing a mag fed, 18.5", 50BMG upper... Whoa mama! That looks like fun!!! Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted August 30, 2013 Report Share Posted August 30, 2013 So I'm looking at the dimensions of the .308 AR and I don't think a 45-70 will work.... HOWEVER!!! Taking a page out of the 300 AAC Blackout handbook... I do think that a creative soul could cut 308 brass down to the shoulder, then resize to .41 cal. Then you could load up some super heavy loads from the big .416 family. You could effectively create a straight wall 10.4x39mm cartridge... Or a 400 SUPER Blackout....... Or even better yet..... .416 Robocop!!!! You guys read it here first!!!! Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted August 30, 2013 Report Share Posted August 30, 2013 On second hand, I don't think there's enough room in a x39 casing to load up enough powder to effectively launch a 300-400gr .416 proj. Maybe if you modified the bolt to accept 30-06 brass... Then you could cut from a longer case. Effectively making it a 10.4x49 I honestly don't know what the fuq I'm talking about. The baby woke me up and I'm in a lack-of-sleep induced stupor. There's only 10% left on my battery, so my rambling will likely end soon. Quote Link to comment Share on other sites More sharing options...
Magwa Posted August 30, 2013 Report Share Posted August 30, 2013 I would love a 7mm STW upper now that is a cartridge.... Quote Link to comment Share on other sites More sharing options...
MikedaddyH Posted September 4, 2013 Report Share Posted September 4, 2013 Here is a lower for the bolt action AR. Quote Link to comment Share on other sites More sharing options...
MikedaddyH Posted September 4, 2013 Report Share Posted September 4, 2013 Here is a lower for the bolt action AR. Quote Link to comment Share on other sites More sharing options...
MikedaddyH Posted September 4, 2013 Report Share Posted September 4, 2013 Ferret50 Quote Link to comment Share on other sites More sharing options...
Jgun Posted September 6, 2013 Report Share Posted September 6, 2013 Without opening up my book of custom cartridge specs, I think that you'd have a hard time beating what they've done to develope the .458 SOCOM. I have no doubt that you could come up with a combination that would launch a 300gr projectile at a higher velocity out of the large platform than you can with the .458 from the small, BUT...... I don't think you realize the amount of work involved. A bolt action would be much easier, but, for a SA, you're talking about creating a wildcat cartridge, that will require you to cut down/form your own brass, the barrel would not be as hard as the bolt and barrel extension, then you have to deal with load developement, and getting your gas system to cycle with your wildcat cartridge. Things like this can be done, but unless you're willing to put a couple of years into it, I don't think you're likely to develope a working system, and even if you do, there are no spares, so you'd have to fabricate or modify every proprietery component. This is certainly not going to be like the BLK where the only proprietery part (other than ammo) is the barrel, and I didn't even address the issue of making your wildcat feed from some existing mag for the large platform guns, because you definitely DON'T want to attempt to make mags. I get tired just thinking about the size of the project. Of course the people that don't listen to those that say "it can't be done" are the ones that break new ground, So I'm thinking that if the kids keeping you up anyway, why don't you get to work and use your time productively? Just kidding. Quote Link to comment Share on other sites More sharing options...
EasyEJL Posted September 6, 2013 Report Share Posted September 6, 2013 what i'd like to see is the equivalent of the 458 socom, but upscaled to use the 308 as the base :) Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted September 6, 2013 Report Share Posted September 6, 2013 what i'd like to see is the equivalent of the 458 socom, but upscaled to use the 308 as the base :) Ooooohhh! Quote Link to comment Share on other sites More sharing options...
Dane Armory Posted September 6, 2013 Report Share Posted September 6, 2013 Like the DA 43-08. A 44 mag projo on the 308 case. Wicked ! Quote Link to comment Share on other sites More sharing options...
Jgun Posted September 7, 2013 Report Share Posted September 7, 2013 Could you offer more information on this cartridge? I've never heard of it (no surprise there considering all of the things I haven't heard anything about) I did a search but found nothing on it at the dane Armory site. Any links you can post? Quote Link to comment Share on other sites More sharing options...
MikedaddyH Posted September 7, 2013 Report Share Posted September 7, 2013 Could you offer more information on this cartridge? I've never heard of it (no surprise there considering all of the things I haven't heard anything about) I did a search but found nothing on it at the dane Armory site. Any links you can post?Jgun it is a wildcat cartridge that I put together using parts from Lee Precision. 308 brass and 44mag projo's. I don't have a good load yet ,one of those backburner projects. Quote Link to comment Share on other sites More sharing options...
Jgun Posted September 8, 2013 Report Share Posted September 8, 2013 Based on your post, would I be correct in assuming that you've built a bolt gun to work on load developement? Any chance you could post a picture of a loaded rd? I'm not sure if you're concerned about someone taking your idea and running with it, so are trying to keep the specifics to yourself, if so I understand. Quote Link to comment Share on other sites More sharing options...
bubbasks Posted September 8, 2013 Report Share Posted September 8, 2013 Dude...that cartridge +circuit judge..... just sayin Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted September 30, 2013 Report Share Posted September 30, 2013 I bought a .450 Marlin upper from Accuracy systems a few years ago....awesome setup. http://www.accuracysystemsinc.com/index.php A .450 Marlin upper would be impressive! Approaching 2-tons of muzzle energy is some serious punch! Quote Link to comment Share on other sites More sharing options...
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