14.5mm JDJ

[Gabe]

http://www.sskindustries.com/atlantis/14.5MMJDJ.html

Alright you wildcatters, what's your opinon on this cartridge? They necked up a 50BMG to the 14.5mm Russian heavy machinegun bullet. Bullet weight and velocity is listed at the link. MV seems similiar to the 7.62x39 but much better bc and obviously way heavier. What kind of trajectory can we expect? Pros and Cons vs 50BMG?

 

[SDC]

Interesting, but sort of pointless. Unless you're using projectiles with an explosive/incendiary/spotting payload, I don't see this round doing anything the .50 couldn't do as well or better. I also wonder how they got around the "over .50 = DD" BS; if I recall correctly, it's the BORE DIAMETER that determines whether something's a DD or not, not the parent cartridge. I WOULD like to see someone start someone building a rifle chambered in a .50 based on the BAT round, though.

 

[Gabe]

I suppose it might help reduce muzzle flash and barrel wear, 14.5 JDJ would certainly be less overbore. The 50bmg was not really designed to shoot from 29" barrels, I wonder how this thing would perform out to longer ranges.

 

[Triad]

SDC, I think the DD classification comes from the actual cartridge, not the bore diameter or parent cartridge. There are several cartridges that are over .50, but are not classified as DD's, .600 Nitro is one example.

There is also a .950 JDJ that is based on a 20mm round.

 

[Triad]

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[John Ross]

Quote: "I also wonder how they got around the "over .50 = DD" BS; if I recall correctly, it's the BORE DIAMETER that determines whether something's a DD or not, not the parent cartridge."

Partially right. The wording is "Military-type weapons with bores over a half inch" are classified as DDs. The bore has to be over a half inch AND the gun also has to be a military-type weapon.

This was how Lord Bentsen turned a whole class of shotgun (The semiauto USAS-12 and the spring-loaded drum guns) into DDs overnight. He decreed that they were military-type weapons.

If the ATF agrees that a gun is NOT a "military-type weapon" (such as .577, .600, and .700 Nitros, 8-bore, 4-bore, and 2-bore single shots and double rifles, and almost all shotguns) then it doesn't matter WHAT the bore size is.

Obviously, JD convinced ATF that a single shot target rifle in a wildcat caliber was NOT a "military-type weapon."

JR