Who Wants an 8mm Cartridge?

So a 32 ACP made longer say 9mm OAL so we can chamber it easily in existing 9mm platforms. We could also up the working pressure up to say 35-40ksi maybe even 45ksi like 327 Mag. Would be an interesting if noisy little bugger.

I propose the name 0,8 cm Auto just to give it a good Euro feel and ensure it never succeeds.

Like a shortened 327 mag made to fit in an auto magazine?

There have been two such proposals in European police circles.
The 7.92x24 VBR and 7mm Penna.
Intent was lower recoil with adequate penetration by their standards.
Neither got much attention.

Dunno, 9mm fits a bore dimension used by a large number of countries all developed independently.
The real question might be--should we revisit 9mm in, say a 9x20 or 9x25 loading?

Ok, an 8x20 or 8x25 might be very cool. But, really 8mm is just another version of .32 caliber (0.315")

The other question is whether 11mm might be the thing, maybe an 11x15--although that would probably look like one of the old Webley .455 or .50 rounds with a suitable BC bullet loaded on top

George P said:

Like a shortened 327 mag made to fit in an auto magazine?

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Kind of like a hot .32 French Long. I like it.

CapnMac said:

The real question might be--should we revisit 9mm in, say a 9x20 or 9x25 loading?

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We call 9x20 the 9mm Browning Long, 9x25 bottleneck from 10mm Norma or straight taper as 9mm Mauser Export.

Hard to think of something really new.

George P said:

Like a shortened 327 mag made to fit in an auto magazine?

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Think of it like the relationship between 9mm and 357 magnum but in the 32/8mm instead.

WrongHanded said:

So the 9mm fell out of favor some decades ago and we got a 10mm, then the 10mm Short (a.k.a .40S&W). Now bullet technology has advanced to the point that 9mm can reliably pass the FBI test, and it's back in vogue.

Lower recoil, greater capacity, still expands to 150% or more of original diameter through various mediums, and goes deep enough but not too deep in ballistic gelatin.

So who's ready for an 8mm cartridge that does all that, but with even more capacity, lower recoil, and still passes the FBI penetration and expansion testing?

If such a beast came to be, would you jump on it?

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Like an updated 8mm Nambu?

mcb said:

So a 32 ACP made longer say 9mm OAL so we can chamber it easily in existing 9mm platforms. We could also up the working pressure up to say 35-40ksi maybe even 45ksi like 327 Mag. Would be an interesting if noisy little bugger.

I propose the name 0,8 cm Auto just to give it a good Euro feel and ensure it never succeeds.

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Like a 30 Luger/7.65 Parabellum?

jdh said:

Like a 30 Luger/7.65 Parabellum?

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No, a straight-wall not bottle neck cartridge. A bottle neck cartridge would not get us any capacity increase over 9mm in similar length magazines. We would get the performance buy running higher pressure over 30 Luger.

mcb said:

No, a straight-wall not bottle neck cartridge. A bottle neck cartridge would not get us any capacity increase over 9mm in similar length magazines. We would get the performance buy running higher pressure over 30 Luger.

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Ok, a shortened 30 Carbine then.

I'll have to buy another dang gun I guess.

Jim Watson said:

Hard to think of something really new.

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Which is the real problem, nothing really new under the sun.

WrongHanded said:

So who's ready for an 8mm cartridge that does all that, but with even more capacity, lower recoil, and still passes the FBI penetration and expansion testing

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Not me. I went from 45 ACP to 9mm in 1988. I transitioned down in barrel lengths over the years since then. I feel secure because the availed 9mm ammo makes me feel secure in terms of lethality and accuracy. My old hands have arthritis that gradually gets worse, and some day I will likely have to go to a 380 for ease of racking. That is OK with me because the fluid transfer bullet cartridges from Lehigh and Underwood make 380 much more effective than JHP. So I see no need for an 8mm cartridge.

Now here is the mystical reason I will stick with 9. It is the last quantitative number in a succession of numbers: 1,2,3,4,5,6,7,8,9,0. Zero has no quantitative value. So 9 is the final number. I just apply that mathematical reality to create a mystical reason for 9mm being the end of my search. Duh!

These are already 8MM.

The Russian round for the Tokarev was kind of like a really hot 32, IIRC.

I thought of the French 32 long also.

I guess you would make the new cartridge plenty hot, and not the right size to fit into any old fashioned pistols.

Like others have said, it could be kind of the autoloader equivalent of 327 magnum.

That would be pretty cool. I like different kinds of 32's.

If a long pistol bullet could be made to look like this, I’m all for it.

It's pretty much already here...

8mm Roth Styer with a little ballistic improvement.

Listed as a 116 at 1088, how much improvement do you want?

I’m for it. Just a tad longer than .32 ACP, and rimless. Too much longer and we can end up with problems feeding from a magazine. It’s gotta not be bottleneck. Perhaps a slight taper, but not much of that either.

8 Roth Styer looks really good, but this cartridge will die with funky diameter bullets. I’m for .312 (unless there is some other popular diameter I am overlooking) for compatibility with extant cartridges.

So, a .32 French Longue that's going about 100 fps faster and shoots an 80 grain bullet? I mean, we already have that, it's called .32 NAA. I know, it's a .380 necked down to .32, but for an autoloader, I don't think you're going to be able to get enough velocity out of a straight wall case in .32 without it being long and requiring a larger grip that many would find uncomfortable. For as great as 5.7 and 7.62 Tok are, they're long and a lot of people don't like the way the pistols they're chambered in feel.

.32 NAA tho is the same length as .380 ACP and we know how small some .380's can be. Plus, it being derived from the .380 means the same mags and bolt can be used meaning that any .380 can be converted to .32 NAA with just a barrel change.

None of this is going to happen tho, people are content with their 9's and .380's and still view those as the bare minimum with .32 being perceived as incapable for self defense except for the smallest of pistols like the Kel Tec 32.

mcb said:

No, a straight-wall not bottle neck cartridge. A bottle neck cartridge would not get us any capacity increase over 9mm in similar length magazines. We would get the performance buy running higher pressure over 30 Luger.

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If after 15, 17, or 20 rounds the problem hasn't been solved, what do you think another 2 rounds is gonna solve?

TTv2 said:

If after 15, 17, or 20 rounds the problem hasn't been solved, what do you think another 2 rounds is gonna solve?

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I admit the 22rd problem is pretty rare but clearly it exists or we would not have 30, 40, 50 rd magazines, drums, and belt fed weapons.

"Quantity has a quality all its own."

"You can never have too much ammo unless you're drowning or on fire."

"More Dakka!"