A faster .400 Corbon

[RooK]

The .400 Corbon currently doesn't have any real 'useful' place in the world. It was meant to push light bullets to fast speeds, but really falls behind what is already available. Brass is formed by pushing a .45acp through a .400 Corbon sizing die. It's basicly limited by the .45acp brass.

Here comes the part I was wondering about... Has anyone tried running .45 Super brass through the .400 sizing die and tried some .45 Super pressure loads? If pressure signs are ok, it would show a lot of promise for high velocity loading. I'm not about to be the guinea pig, just thought I would think out loud.

 

[Hand_Rifle_Guy]

There's a thing called a .40 super around. People build Glocks to run it, I think. Can't remember what you make it outta, but I seem to think it's in the direction you're going. I believe it's supposed to be faster than the 10mm, but don't hold me to it.

Searched up a thread about it. 'Sgotta link to specific ammo info. Search turned up a bunch of related threads, so if you need more specifics, go digging. Hope this helps.

 

[spartacus2002]

I looked at velocities/energies for .400 corbon in the Natchez Shooters Supply catalog, and it looked damn powerful to me. 1500fps, 650ft-lbs of energy? Makes my .45 look weak

 

[gunfan]

.45 Super brass necked down to .40

Why bother doing this when the work has already been done for you? Simply go out and purchase a 10mm Automatic!

Everyone wants to "reinvent the wheel." The size of frame is identical. The pressures of the pistol you are contemplating are within the same perameters as well. Go out and purchase a Dan Wesson Pointman Major in 10mm Auto for between $550-$650 and enjoy yourself! There's no need to increase your monetary depletion for an "experimental" cartridge.

JMHO,

Scott

 

[RooK]

There's a thing called a .40 super around. People build Glocks to run it, I think. Can't remember what you make it outta, but I seem to think it's in the direction you're going. I believe it's supposed to be faster than the 10mm, but don't hold me to it.

Yep, it does exceed the 10mm, but there are a few problems: No one currently makes brass or factory ammunition, as far as I know. Barrels, if you can find them, are sure to be expensive, same for the brass. .45 Win Mag brass (parent cartridge) is also more expensive.

1500fps, 650ft-lbs of energy? Makes my .45 look weak

What weight bullet is that? Corbon loads show that with only a 135gr bullet can go 1400fps with max loads (no barrel length noted). That's far behind the 10mm by a longshot. I'm looking for heavy bullet (200-220gr) performance.

Everyone wants to "reinvent the wheel." The size of frame is identical. The pressures of the pistol you are contemplating are within the same perameters as well. Go out and purchase a Dan Wesson Pointman Major in 10mm Auto for between $550-$650 and enjoy yourself! There's no need to increase your monetary depletion for an "experimental" cartridge.

Lets look at this rationally. If you already have a 1911, a .400 Corbon barrel is around $165, dies are around $30. For less than $200 you could have something that meets or beats the 10mm while still being able to shoot .45acp or .45 Super with a barrel switch. That's a far cry from the $550 (at the lowest) price you offer. Sometimes you don't need to reinvent the wheel, just mold it to the occasion.

Does anyone have a program or some calculations where you could estimate the velocity increase by upping the pressure to .45 super levels? This would be a great aid and help with the WAGing.

 

[carpettbaggerr]

Post over in handloading. Clark may have some ideas for you.

 

[RooK]

Thanks for the idea, reposted in Handloading.