Wildcats off 7.62X39mm case?

[Natty Bumpo]

Just curious if there were any wildcats based off the 7.62X39 case. With its modest capacity, seems like a natural to neck down. Maybe there's better alternatives in 6.5 or 6mm or .224 caliber, but that doesn't usually stop wildcatters from trying. I know in an AR platform, it's not easy getting magazines to feed reliably due to the amount of case taper. But the case could be "Ackleyed"; that is to say, blown out by fireforming to remove most of the taper. I've never had much interest in loading for a cartridge for which I had to shoot cases in order to make cases, but others are OK with this.

Like I said, just curious.

 

[biffj]

There is a 9mm wildcat out there using heavy bullets for subsonic fire. I've heard there are some 22 cal kitties too.....

Frank

 

[gunsnjeeps]

Look up the PPC cartridges. 6mm, .22 and .20 prbably a couple of extras.

 

[FN in MT]

The .220 Russian was the parent case for the PPC line. Not the x39.

 

[leadbullet]

I use 7,62X39 brass to make 6.5 grendel and 6MM AR. works pretty darn good.

 

[MarinePMI]

The .220 Russian was the parent case for the PPC line. Not the x39.

As I understand it, the .220 is the parent of the PPC line, and the x39 is the parent of the .220 Russian...

.220 Russian - Wikipedia, the free encyclopedia

I'd quote my "Cartridges of the World" book, but I'm on the road right now...

PPC bin .220 Russian bin 7.62x39 (in arabic )

 

[FN in MT]

As I understand it, the .220 is the parent of the PPC line, and the x39 is the parent of the .220 Russian...

.220 Russian - Wikipedia, the free encyclopedia

I'd quote my "Cartridges of the World" book, but I'm on the road right now...

PPC bin .220 Russian bin 7.62x39 (in arabic )

I stand CORRECTED! Never knew that....always thought the .220 was it's own cartridge.

 

[Natty Bumpo]

Thanks guys. I didn't know the PPC cases were based off the 7.62X39. I once saw a used, heavy barreled bolt gun built off an old Mauser action with a lamainated stock at my local dealers, chambered in 6mm PPC (I think). If it had been left-handed, I'd have been all over that.

 

[ksthomas]

The .30 OTB, a 7.62x39 "improved," intended to be loaded with heavy bullets for suppressed work, while retaining the ability to use conventional 7.62x39 ammo. Strictly a military development, and don't know that it has seen any civilian use.

 

[gunsnjeeps]

MarinePMIbeat me to it. That .30 OTB sounds interesting. If I had a 7.62x39 bolt action I'd play with it.

 

[Greg Langelius *]

I load both the 7.62x39 and the .30BR. IMHO the primary differences (aside from a few grains worth of case capacity) is the bolt face diameter. The .22, 6mm, 7mm, and .30br will do what the x39 case will do as a wildcat, and also do it with a (more) standard .473" diameter bolt face.

I purchased a Savage 10FCM Scout in the 7.62x39 chambering because I was interested in having the capacity to rebarrel to a PPC chambering. I subsequently acquired a .30BR barrel and have been fully (overly?) committed to making it work, so no rebarrelling of the Scout has yet occurred. The Savage barrel adopts the American manufacturing practice of providing a .308 diameter bore, and initial load development with 110gr and 125gr .308 diameter bullets has been surprisingly gratifying (the Accu-Stock and Accu-Trigger may be paying off dividends in this...). The rather dismal state of the components market has complicated the task of .30BR load development to the point of pre-psycho distraction (and yes, this time I bought a lot more of the same bullets before I started the latest cycle...).

Greg

 

[sandwarrior]

I stand CORRECTED! Never knew that....always thought the .220 was it's own cartridge.

True. The difference being the Russians somehow (Finns maybe?) decided on a small rifle primer instead of the then standard large rifle primer when necking down the 7.62x39 to .220". In their pursuit to get more power out of small cases Pindell and Palmisano (PP in the PPC) found they got better accuracy with cases using small rifle primers. Thus they chose to work with the .220 Russian as their standard to make cases from instead of the 7.62x39.

 

[MarinePMI]

True. The difference being the Russians somehow (Finns maybe?) decided on a small rifle primer instead of the then standard large rifle primer when necking down the 7.62x39 to .220". In their pursuit to get more power out of small cases Pindell and Palmisano (PP in the PPC) found they got better accuracy with cases using small rifle primers. Thus they chose to work with the .220 Russian as their standard to make cases from instead of the 7.62x39.

True, mostly. I have 7.62x39 cases that are in both varieties; SR and LR primer pockets. (Played hell when I reloaded for a CAR-15 in 7.62x39mm and didn't keep the cases segregated.)

 

[sandwarrior]

True, mostly. I have 7.62x39 cases that are in both varieties; SR and LR primer pockets. (Played hell when I reloaded for a CAR-15 in 7.62x39mm and didn't keep the cases segregated.)

I bet that was a lesson in frustration! I've run into that loading .45 auto. Going along seating primers then a WTH?!? Couldn't understand why I kept losing my primer pin while sizing. I then had to go through the batch and sort them. I never knew they made large and small primer .45 until then.

 

[sandwarrior]

Good information to remind people of that. I often use 7.62x39 to neck down for 6.5 Grendel.