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Discussion Starter · #1 ·
Anyone done any experimenting with wildcatting the 7.62x39 cartridge. Just curious if there is anything out there with a different body taper, shoulder angle or something that could be done with a reamer. Bored and need a project.
 

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Anyone done any experimenting with wildcatting the 7.62x39 cartridge. Just curious if there is anything out there with a different body taper, shoulder angle or something that could be done with a reamer. Bored and need a project.
6.5G? Ha! same bolt face diam if I remember correctly,220 Russian is a necked down x39, 9x39, 6mmAR
see if 1stmarine has done anything, he's pretty deep into wildcats
 

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Discussion Starter · #3 ·
6.5G? Ha! same bolt face diam if I remember correctly,220 Russian is a necked down x39, 9x39, 6mmAR
see if 1stmarine has done anything, he's pretty deep into wildcats
I looked at that but was wanting to keep the original barrel and just ream the chamber or something. I guess a major hurdle would be that it is .311 instead of .308 if I remember correctly.
 

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I looked at that but was wanting to keep the original barrel and just ream the chamber or something. I guess a major hurdle would be that it is .311 instead of .308 if I remember correctly.
yea, not sure on that one
 

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Anyone done any experimenting with wildcatting the 7.62x39 cartridge. Just curious if there is anything out there with a different body taper, shoulder angle or something that could be done with a reamer. Bored and need a project.
Yes there are "7.62x39 Improved" wildcats which is a regular 7.62 and fire formed to remove the taper and increase the shoulder angle. The OAL remains identical.
 

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Discussion Starter · #6 ·
Yes there are "7.62x39 Improved" wildcats which is a regular 7.62 and fire formed to remove the taper and increase the shoulder angle. The OAL remains identical.
That is exactly what I was looking for. I wonder where you would buy the reamer.
 

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If you remove the body taper, wouldn't you have issues with mags? Not knowing what you are modding just assuming you use something that takes mags. Just a thought before you take the leap. Good luck.
 

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Discussion Starter · #8 ·
If you remove the body taper, wouldn't you have issues with mags? Not knowing what you are modding just assuming you use something that takes mags. Just a thought before you take the leap. Good luck.
Yea, that could be a problem. It would be in an AR and my thought was that a 6.8 mag might solve that problem.
 

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That is exactly what I was looking for. I wonder where you would buy the reamer.
I want one also. I don't see serious mag problems, but how would a steel case behave when fired in a Ackley-like chamber?
 

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I want one also. I don't see serious mag problems, but how would a steel case behave when fired in a Ackley-like chamber?
Maybe some others with more experience in this area will weigh in. I don't know that it would be any problem as long as it didn't stick in the chamber and fail to extract, even if the case split it is pretty much garbage anyway. That is just my opinion, I wouldn't try it till I have more info.
 

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I want one also. I don't see serious mag problems, but how would a steel case behave when fired in a Ackley-like chamber?
It can be shot but there really is no benefit to a steel case that can not be reloaded. The performance gain is achieved after fire forming a brass case.
 

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It can be shot but there really is no benefit to a steel case that can not be reloaded. The performance gain is achieved after fire forming a brass case.
I agree, but my comment concerns the possibility of a steel-case round splitting in the larger chamber, dumping the gas into who knows where.
 

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I agree, but my comment concerns the possibility of a steel-case round splitting in the larger chamber, dumping the gas into who knows where.
If you are worried about steel cases splitting in a modified chamber then don't shoot them . Seems simple
 

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You could neck it down to .264 caliber and then go by the metric caliber 6.5 and....

My mister Mod. What a BIG Hammer you have there...:a24:
 

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I looked at that but was wanting to keep the original barrel and just ream the chamber or something. I guess a major hurdle would be that it is .311 instead of .308 if I remember correctly.
The other major problem is the bolt. In the AK, it isn't a problem, but when you try to run the x39 bolt face in an AR, it doesn't hold up and has a tendency to lose lugs. That's one of the reasons Harrison at ARP stopped selling barrels for the 7.62x39.
 
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