What about 7.62x45?

[KriegHund]

I once saw that there is a round in 7.62x45mm.

What about that? It sounds good- more like a 5.56x45 but with alot more power, but still less than 7.62x54.

Apprently the CZ52 (rifle) was chambered in it.

Anyone have any info on the round?

 

[beerslurpy]

It was apparently awesome but never mass-produced. If we could get some rifles chambered in it and get Wolf to start making it, we might be good to go.

Then again, we would probably be better off asking Wolf to make with the 6.8 SPC instead. I would really dig an F2000 chambered in 6.8SPC.

 

[Moonclip]

It is not much more powerful than 7.62x39 and the ammo nowadays is hard to find and usually highly corrosive stuff when you do. Some CZ52 rifles were converted to 7.62x39 also.

 

[Tony Williams]

The 7.62x45 is shown in the pic below, from the article on assault rifles and their ammunition on my website.

There is actually a new 7.62x45 around, albeit a rather obscure one: it has been developed by Pindad of the Philippines for a police rifle and is a straight-cased round; essentially an extended M1 Carbine case.

Tony Williams: Military gun and ammunition website and discussion forum

 

[Gewehr98]

The round was developed for the Czechoslovakian military.

7.62x45 M52 ammo was used in the Czech VZ-52 rifle and Czech machine gun of the same vintage. Eventually, Czechoslovakia fell in line with the other Warsaw Pact countries, and produced their VZ-52/57 rifles in 7.62x39 M43 Soviet chambering. In 1958, they produced their VZ-58 rifle, which looked a lot like an AK-47 but functioned differently, in 7.62x39. That signalled the downfall of the M52 7.62x45 round.

I handload the M52 7.62x45 round, and make the brass for it, since commercial supplies of military surplus steel-cased 7.62x45 ammo have all but dried up. To keep my own VZ-52 rifle and those of a few friends' fed, I developed a handload using the 123gr .310-.311" AK bullet. The extra 6mm of case length delivers an extra 100-200 fps of bullet velocity over the 7.62x39 M43 Soviet round, pushing it past the .30-30 Winchester and closer to the .300 Savage in performance. Every now and then, I can be talked into selling a batch of the brass for folks who managed to snag the neat VZ-52 rifle when they were being imported.

How do I know this stuff? Check out the website by clicking on my original 7.62x45 VZ-52 below:

 

[Dionysusigma]

Regarding the Phillipine case mentioned above, I wonder what you'd get if you opened the 5.56 case up to .30 and stuffed a .308 round in there (and still have the same overall length of the original 5.56).

Sounds to me like it'd be great for... well, something. A .30cal that you could load into AR mags, you know.

 

[beerslurpy]

That is called 300 whisper.

 

[Dionysusigma]

Oh. So its metric designation would actually be 7.62 x 45, or what?

 

[Tony Williams]

The .300 Whisper measures 7.62x35. The case length is kept short to leave room for long, heavy, low-drag bullets as this is intended for silent sniping; muzzle velocity is subsonic. HK have recently introduced something similar for one of their silenced military/police weapons, the 7.62x37. The photo at the bottom shows some of the rounds developed for silent sniping (mostly from the Whisper range by J D Jones of SSK Industries). The .45 ACP on the left was of course used in the De Lisle silent carbine; the 7.62mm NATO on the right is for scale.

What might interest you more is the new .30 HRT (Herrett Rimless Tactical) from Teppo Jutsu. This consists of the 6.8x43 Rem (based on the fatter .30 Rem case) necked out to .30 cal. Metric measurement is 7.62x41.

Tony Williams: Military gun and ammunition website and discussion forum

 

[Reed1911]

That is called 300 whisper.

No. The .300 Whisper is the .221 Fireball case necked up to .308, not the .223.

 

[Jim Watson]

The .30x.223 was done some years ago and called the .30 Apache.
The originator loaded it long and shot it in single shot mode for metallic silhouettes. It amazed Roy Dunlap by driving a 190 grain boattail fast enough to knock over a 500 metre ram.

I don't see much hope for wide acceptance of these oddball calibers. You have to have an inside track with a government agency and catch them with a big budget and some kind of application in mind.