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Post by gunmutt on Aug 20, 2012 5:52:02 GMT -8
OK I am in love with the 300 bulk but scared to death that one day a 300 bulk will end up chambered in my 556. Then well boom. But a 68 case holding. 7.62 round would be cool. It could be the 300 black beauty. Plus all this in a small compact rifle. That's it I want to try it. What do you guys think
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Deleted
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Post by Deleted on Aug 20, 2012 6:37:36 GMT -8
OK I am in love with the 300 bulk but scared to death that one day a 300 bulk will end up chambered in my 556. Then well boom. But a 68 case holding. 7.62 round would be cool. It could be the 300 black beauty. Plus all this in a small compact rifle. That's it I want to try it. What do you guys think Your idea is an doable option. IMHO your results would be similar to the parent case with a slightly heavier bullet. You will also gain some additional velocity. Your only limiting factor is the magazine length. Using 125-135 grain bullets you could easily stay under maximum length and not infringe on usable case capacity. There is really only one way to test your idea. Buy a reamer and have a barrel made. When testing, document every test load you shoot and measure every OAL on every load you shoot. When you are satisfied with your results, compare them to the original cartridge. The one part of wildcating that is most gratifying is having something different than every one else at the range. When some asks about your cartridge you can answer " Ya I tried that, would you like to shoot it " Good luck with your new cartridge. |
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Post by GLSHOOTER on Aug 20, 2012 11:52:40 GMT -8
And on my nickle, that is 2 .5 X 2 Cents worth, you could look at the 30 Remington and get a good idea of what you are looking at in performance. Looking over my OLD, 1947 book, that discuses the 25 Remington it is very close to what we are shooting in the 6X68 so by extension the 30 Remington would be too.  Greg |
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Post by The Wolverine on Aug 20, 2012 17:31:29 GMT -8
I looked into doing a 30x68 a couple years ago, just never pulled the trigger( pun intended ). In researching it I came across the 30HRT, uses 30 herrett dies to load. I am just not a big 7.62 fan, 6 and 6.5 have always cranked my tractor Basically a 30-30 in a AR IIRC, I will have to look up the numbers I ran on it. |
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Post by gunmutt on Sept 4, 2012 18:08:43 GMT -8
I have been really looking into some of the .30 wildcats. Plenty out there. The 7.63x6.8 idea has been done. The guy who came up with the 7.62x40 WT has come up with several cool wildcats based on the 6.5 and 7.62x39 brass. There is the 6.8 ARk, 7mm ARK, and the 7.63 ARk. These seem really promising in the ballistics they offer. I am really looking for a thumper similar to that of 7.62x39 that would be more efficient in an AR platform. Again I really do like the 300 AAC Blk but the thought of crossing that round into my 5.56 in a accident really puts me off. Sometimes a different size bolt-face could be a life saver.
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Post by GLSHOOTER on Sept 4, 2012 19:21:05 GMT -8
I have been really looking into some of the .30 wildcats. Plenty out there. The 7.63x6.8 idea has been done. The guy who came up with the 7.62x40 WT has come up with several cool wildcats based on the 6.5 and 7.62x39 brass. There is the 6.8 ARk, 7mm ARK, and the 7.63 ARk. These seem really promising in the ballistics they offer. I am really looking for a thumper similar to that of 7.62x39 that would be more efficient in an AR platform. Again I really do like the 300 AAC Blk but the thought of crossing that round into my 5.56 in a accident really puts me off. Sometimes a different size bolt-face could be a life saver. A 30 OSSM will end all the want ti's on this one quickly. Greg |
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dr69er
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Protect the US Consitution & the American Way.
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Post by dr69er on Sept 5, 2012 6:02:38 GMT -8
I agree with Paul, that has been tried before and it's called the
.30 HRT...It's just not much of a performance gain over
the x39mm, x40mm WT or for that matter the .300 Blackout.
It's still a nice round though...personally, I would stick with the
x40 WT as it is the least expensive to reload for (not Including
the .300 BLK)...The 6.8 SPC cases are more expensive
and harder to find vs. .223/5.56mm brass.
Good Luck.
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Post by gunmutt on Sept 7, 2012 18:47:45 GMT -8
From researching the internet(ooohhh) I came a cross some forums on the 7ARk which the maker chimed in. He is actually the designer behind the 7.62x40WT. The 7ARK is based off the 6.5 case or the 7.62x39 case. He is getting some pretty cool velocities and power factors. There is actually a video in youtube showing a a confirmed deer kill. That thing was one and done. As for the price of the brass I'm not concerned. The only hinge is the guy is not worried about this round getting to the market and a reamer for a barrel is a no go until he decides to release it.
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Deleted
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Post by Deleted on Sept 7, 2012 19:19:40 GMT -8
From researching the internet(ooohhh) I came a cross some forums on the 7ARk which the maker chimed in. He is actually the designer behind the 7.62x40WT. The 7ARK is based off the 6.5 case or the 7.62x39 case. He is getting some pretty cool velocities and power factors. There is actually a video in youtube showing a a confirmed deer kill. That thing was one and done. As for the price of the brass I'm not concerned. The only hinge is the guy is not worried about this round getting to the market and a reamer for a barrel is a no go until he decides to release it. This sounds like the 30 Major. The U.S. Army marksmanship unit has been using this for at least five years that I know of. It is simply the 6.5 Grendel case opened up to .308 with no other changes. IIRC they are getting about 2950 FPS with a 118 gr. bullet |
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Post by gunmutt on Sept 7, 2012 19:57:17 GMT -8
30 major sounds like a winner. But really its just a 7.62x39 only domesticated. I will more more into it. But its that 7mm that gets me. just wish I could find a chamber reamer
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Post by GLSHOOTER on Sept 7, 2012 20:37:46 GMT -8
30 major sounds like a winner. But really its just a 7.62x39 only domesticated. I will more more into it. But its that 7mm that gets me. just wish I could find a chamber reamer A phone call to PT&G, a credit card and a few months wait and it will be yours. Greg |
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Deleted
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Post by Deleted on Sept 11, 2012 4:45:01 GMT -8
30 major sounds like a winner. But really its just a 7.62x39 only domesticated. I will more more into it. But its that 7mm that gets me. just wish I could find a chamber reamer I am not sure I would call the Major a domesticated 7.62X39. In a case as small as the Grendel, a 200 FPS gain is a big deal. With the case taper gone, so will be the feed issues some experience with the 7.62x39. You have access to GOOD brass, it will use .308 bullets not .310 all though you can load .308's in a 7.62x39. But if you are going to load for it anyway why not go with the bigger case. The 7mm would be an interesting chambering. It could be done very easily. The question I would ask, is why? If you use the parent case as is, you have access to basically the same bullet weights with a better BC. It would not be any more effective with the heavy bullets than the 6.5. If you shoot the lighter bullets, most are designed for rapid expansion. Also if you go to the heavy 150's and up it will compromise case capacity. If you decide to go ahead with your project. Call Dave Kiff at Pacific Tool and Gauge. He would be happy to grind you a reamer. |
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Post by The Wolverine on Sept 11, 2012 9:06:50 GMT -8
It could be done very easily. The question I would ask, is why? If you use the parent case as is, you have access to basically the same bullet weights with a better BC. It would not be any more effective with the heavy bullets than the 6.5. If you shoot the lighter bullets, most are designed for rapid expansion. Also if you go to the heavy 150's and up it will compromise case capacity. STOP, Who are you? and what did you do with Ritch? Do not bring logic into this!!! Logic is not allowed, next you are going to say you do not need any more AR's, six or seven is plenty. Why do a 7 Grendel? cause he wants too, dadgummit, and that is good enough for me. Paul |
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Post by GLSHOOTER on Sept 11, 2012 10:10:30 GMT -8
It could be done very easily. The question I would ask, is why? If you use the parent case as is, you have access to basically the same bullet weights with a better BC. It would not be any more effective with the heavy bullets than the 6.5. If you shoot the lighter bullets, most are designed for rapid expansion. Also if you go to the heavy 150's and up it will compromise case capacity. STOP, Who are you? and what did you do with Ritch? Do not bring logic into this!!! Logic is not allowed, next you are going to say you do not need any more AR's, six or seven is plenty. Why do a 7 Grendel? cause he wants too, dadgummit, and that is good enough for me. Paul Yeah...........Like YOU wouldn't want one?  ??  Greg |
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