10mm GAP cartridge

[mondocomputerman]

To make a shorter 10mm cartridge, would Glock call it the 10mm GAP? Would it basically be the same thing as a .40 S&W? Hope I made you laugh

 

[clipse]

I read something about a .40 super. Ended up being a 10mm.


clipse

 

[agtman]

And, like the .400 Corbon, some of these wannabe "10mms" end up being well short of real 10mm ballistics (unless limited to using the lightest possible bullets).

 

[HankB]

Well, the .357 SIG is basically a .40 S&W necked to .357 . . . I imagine you could neck a .45 GAP down to .40 if you wanted to.

 

[Missouri Mule]

Why not a .45 necked down to a .38?

 

[Ktulu]

I have a better question then why not. WHY?

 

[JNewell]

Got news for ya...there already is a "10mm GAP"...it's the .40 Short & Weak.

 

[clipse]

I say 10mm necked down to .38. Call it the .357 sig maximum. Huh? 115 gr. going 2000 fps. I think then we are getting close the winchesters short action magnum rounds though.


clipse

 

[m1911joe]

Clispe:

Dillion beat you to it. They call it the 9X25 Dillion. 10mm necked down to 9.

 

[Grump]

.45 ACP has already been necked down to .38 (.357). It was about the same time Bain & Davis were doing that with .44 Magnums too.

It never took off.

Now, if you shorten the 10mm necked down to .357 so it will fit into short magwell guns, are you all the way back to .357 SIG dimensions with a large primer?

Yes, you did make me laugh. Of course, you could lengthen .40 S&W by 2mm, make the sidewalls strong enough to hold 60,000 PSI in standard Glock chambers, and have a Glock-safe .40...

But we'd still have case-failure kB!s from the doofuses who put Brasso in their tumblers, wouldn't we?

 

[MCNETT]

115gr @ 1900fps
125gr @ 1775fps
147gr @ 1600fps
Yeah, from the factory! 9X25 loads from DoubleTap Ammunition will hit the street on May 26th!
-Mike

 

[tetchaje1]

Actually, 40Super smokes the mighty 10mm in exterior ballistics. The 400Corbon is weaker, but the 40Super can push bullets more then 200fps faster than the 10. Now, just to find a factory manufacturer...

...McNett?!?

 

[mrapathy2000]

first post was funny.

tetchaje1 how does that compare to 10mm magnum?
http://www.sixguns.com/tests/tt10mag.htm
http://marina.fortunecity.com/harbour/347/10mm01.html

 

[tetchaje1]

mrapathy,

40Super pushes a 135gr pill at 1800fps+ and 200gr loads at 1450fps+, though I'm sure that McNett could easily push those levels.

It looks as though the 10mm Magnum edges it out, but the 40Super fits in a standard 1911 frame...

 

[Brasso]

Hey, I've never gotten into anyone's tumbler!


Seriously though, I use Brasso in my tumbler. Just a drop or two per batch. I've done this for years with .44mag and loaded them over 20 times each. NO problems. I have heard that it could be bad, but I've never had a problem or heard of anyone having a problem.


If you have I would like to know about it. It may change the way I tumble.

 

[agtman]

Actually, the primary benefit of the .40 Super, as tetchaje1 said, is that it allows the guys with .45s to get into the "10mm game" with a cartridge that can shoot all the .40cal/10mm bullets the 10mm can, and at high velocities too, and they don't need a new gun to do it. Basically, all they need is a drop-in .40Super barrel and heavier springs. (The jury's still out on whether the .40Super set-up would beat apart an ordinary 1911 frame over time, but some maintainance is probably inevitable).

From that perspective it's a reasonable choice because it's economical - giving you 2 guns in 1, with that additional caliber bringing a lot of power to the table. It's no different, really, from all the Glock 20 fans who've acquired extra "drop-in" barrels in .40S&W, .357Sig and 9x25 Dillon.

While the .40Super's fps/fpe numbers are impressive with the lighter range of .40cal/10mm bullets, I'm not all that impressed with what it does with the heavier slugs over the "heavy & fast" 10mm loads from DT or Texas Ammo.

Plus, the non-availability of .40Super ammo makes the 10mm ubiquitous by comparison.

 

[Zero]

Project I'm workin on

I'm currently working on a project that will basically be a .50 AE case necked down to .17 It should be capable of firing that little 17 grain projectile, at at least 3000 fps...from a Desert Eagle Frame.

 

[mondocomputerman]

Seriously, or just jokin'? That would be quite a sight.

 

[Zero]

Just joking

What I'm actually working is a reverse-necking scheme. I'm gonna take a 9mm case and neck it up to .45 and I'm gonna call it the 45x9

 

[Mairsil]

Actually, the .224 BOZ comes pretty close to your .17 DE plan... It's a 10mm necked down to fit a .223 rifle bullet. Pretty funky. I know some people have barrels for it in their Glock 20's.

http://www.civil-defence.org/products/ballistics/boz224/boz224.html

 

[BluesBear]

I had a Clarke .38/45 barrel that I bought back around 1974. It ran like a champ in my ol' GI .45s.
It was a very good cartidge and I never could figure out why it didn't catch on. It would feed 100% with ANY .357 bullet including full wadcutters.

I sold the barrel and dies because I just got lazy and didn't feel like lubing the cases to reload.

Oh well just one more gun related mistake to kick myself over.

 

[Croyance]

agtman, which ammo company is DT? Do you have a link? Thanks.

 

[Dave R]

I have a rifle in .357mag necked down to .17.

'Course, that's a far cry from .50AE necked to .17.

'Course, mine's real. Great whistle pig gun.

 

[MCNETT]

www.doubletapammo.com

 

[Mikul]

I'm working on a cartridge that will take a .50 BMG and neck it down to a Victrola needle. I estimate that it will have a muzzle velocity of 2,000,000 fps and actually travel back in time to hit your target before you pull the trigger. This should make sight correction significantly easier.

Throat erosion may be severe.