A pistol round that will make many people happy.

Those super light .40's and .45's sound gimmicky. Very low sectional density. Probably penetrate and retain velocity as well as birdshot or lighter buckshot pellets. :D

In contrast, a 110 grain .308 caliber bullet has the sectional density equivalent to a 236 grain .451 caliber projectile.

As far as the muzzle blast and report, I wouldn't think it'd be any worse than a .357 snubby, even with milder loads. There's plenty of people who carry LCP's and comparable guns with 1.8-2'' barrels. I assume the muzzle blast would be pretty significant.

Also I don't think there's anything stopping you from using a flash suppressor or sound suppressor, if you wanted to. You'd just have to ensure the suppressor is capable of handling the pressure of supersonic loads.
 
As far as the muzzle blast and report, I wouldn't think it'd be any worse than a .357 snubby, even with milder loads.
Click to expand...

With all the extra powder of a .308 cartridge coming out of a pistol barrel, I think you are in error. There is going to be a LOT of extra flash and noise

There's plenty of people who carry LCP's and comparable guns with 1.8-2'' barrels. I assume the muzzle blast would be pretty significant.
Click to expand...

.308 cartridge from a pistol length barrel is going to be many times larger than what you get from an LCP.

Also I don't think there's anything stopping you from using a flash suppressor or sound suppressor, if you wanted to. You'd just have to ensure the suppressor is capable of handling the pressure of supersonic loads.
Click to expand...

Well, once you add the noise suppressor, you are almost back to a carbine length barrel and that sort of negates the whole compact-sized notion of a hyper velocity pistol.

Put on a flash suppressor? Is that in addition to the muzzle break?

To make what you want to work the way you want it to work in a manner that the public is going to see as beneficial is going to be very difficult. However, nothing is stopping you from trying. Go ahead and build your prototype and start promoting it and see what the reactions are.
 
They had some 45 ACP with about 80 gr bullet @ 1800 fps. I was told they penetrate about 6" and expand violently.
Click to expand...
Wow, and people say 5.7x28 is a gimmick. Bullet half that mass at the same speed, which penetrates about twice as much while tumbling/fragmenting along multiple paths, and after penetrating a thin rigid barrier, no less (not true 'armor' with the hollow points, of course, but they are still going fast enough to punch through stuff that would mushroom & deflect slower rounds)

I don't know why I'd want to neck it down further to .308"
Click to expand...
For the velocities attainable from pistols or small PDWs, going lower than 308 rapidly improves armor/barrier penetration characteristics. Not a usual criteria we care about, but it is a legitimate reason to model something after 7.62x25 vs 9mm +P, for example (with similarly engineered loads/bullets, the smaller one can punch through better every time)

TCB
 
Go for it. Give it a try.

You might want to consider dropping to a 7mm round rather than 7.62. Upside increased case capacity etc. and possible increased control when firing, downside a sharper shoulder.

But try it.

I think the weak link here is what the round is to be used for. If a PDW or pistol there is a reason that service caliber pistols tend to have similar profiles, the reason is controlability in rapid fire. The other reason that's been mentioned is the size of the gun.

You might be looking at a better hunting round than defensive round.

tipoc
 
Last edited:
Look at the bullets suitable for 7.62x25 instead of those "heavy" 30 carbine. Also look at sizing the 65gr gold dots for 32. Should get "explosive" expansion at the likely velocities.
 
once upon a time

Rob Leatham said the 9x25 had too much recoil for him; all straight back (and really hard) in compensated guns.
 
Rob Leatham said the 9x25 had too much recoil for him; all straight back (and really hard) in compensated guns.
__________________
Click to expand...


Maybe in regards to being able to put 5 hits on target in under 2 seconds in a timed competition?
I doubt he can't handle it plinking at the range. Just my assumptions, as I don't know the gent personally.
 
The recoil on 9x25 looks fairly tame, out of a compensated glock20.
Click to expand...

Emphasis added!

What we see in his body language: "la-dee-da-dee-dee. I'm just poppping off some ikle buwets"

What is probably being said through clenched teeth: "Yeowww! Sonofa-kicking-rabid mule of a gun! Shoot faster! Must end the pain!"
 
well if you want to make a new bottleneck pistol cal, go the route that the 22 TCM did which is a shortened 223/5.56, if you want a 308 cal, just make a shortened 308/7.62.
 
Does that mean there is no interest in my newly developed blowback vest pocket pistol in .50 BMG with a 2" barrel and a 50 round magazine?

I'll swap you my custom COP Derringer in .600 Nitro Express for it. And throw in a Thunderwear holster to boot. :)
 
A necked-down 10mm sounds like a "wimpy" version of the .440 CorBon developed for the Desert Eagle. Good luck trying to find the DE .440 barrel - I've been looking for over a decade and have had no luck.
 
What advantage would a 10mm necked down to .308 have over the 30 carbine? I'd want a larger caliber for a handgun and the 30 carbine can do anything a necked down 10mm can do better anyway.
 
What advantage would a 10mm necked down to .308 have over the 30 carbine?
Click to expand...
.308-10mm auto would be more efficient in a shorter barrel. I seriously doubt that you'd be able to get 1800FPS from .30 carbine in a 6'' barrel, when the standard load is 1990FPS in an 18.5'' barrel. 9x25 Dillon, reaches 1800FPS with a 115 grain load in a 6'' bbl.

I just watched 4 videos of someone shooting .30 carbine from an automag with a 6'' bbl, and only one shot broke 1650FPS.

Also I don't see many auto pistols in .30 carbine. Seems easier to get a 10mm platform to convert to .308-10mm than finding a .30 carbine auto pistol.

22 TCM
Click to expand...
Why? It's basically the twin of 5.7x28, which doesn't really impress me.
Bullets less than half the weight at the same velocity. Lighter for caliber, bullets of a smaller caliber. What's gained other than reduced recoil and possible magazine capacity increase, over the .308-10mm?
 
Pistol bullets seem to be lethal because, despite being slow and low energy, they make up for it by being wide and heavy. So they make largish holes.

Rifle bullets seam to be lethal because they are very fast, and actually produce the temporary wound cavity damage that handgun bullets don't have the energy to produce.

This round lives in limbo between them and would do neither. It doesn't have the velocity to do the damage of a rifle bullet or the size to cut large enough holes.


And it is also not small and light enough to do some of the odd things in flesh that round like .223 and 5.7 may do in terms of tumbling.


It just appears to be a too-small pistol bullet or a too-slow rifle bullet. Just the thing to poke clean, tiny holes that do minimal damage for the amount of energy they carry. A poor bargain, I think.
 
You must log in or register to reply here.
Back
Top