40cal Rifle Cartridge. 10mm Projectiles Non-Rimmed.

[arakboss]

We have the 350 Legend cartridge that uses 9mm bullets and the 450 Bushmaster that uses 45cal bullets. Is there a rifle based cartridge that uses 40cal bullets? Maybe the 400 Corbon approach could be used with 450 Bushmaster cartridge?

Edit: Just realized the 38-40 uses a 10mm bullet but it is a rimmed catridge. I am thinking about something suitable for AR platform.

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[Mike_M57]

.40 Newton, maybe?

 

[arakboss]

.40 Newton, maybe?

Wow, that is a powerful cartridge.

The .40 Newton is able to propel a 0.405 dia., 301 grain bullet at 3,040 fps. with 6,180 ft.-lbs. of energy. The caliber is capable of hunting large game, including the big 5 in Africa.

 

[Mike_M57]

Might be fun in an AR platform

 

[oremike]

I know they are just a hair bigger but there are a bunch of cartridges using the 416 caliber bullets.

 

[Mark W.]

.405 Winchester
.450-400 3-Inch Nitro Express
.400 H&H Magnum
.416 Rigby
.416 Remington Magnum
.416 Weatherby Magnum
.416 Ruger
.416 Taylor
.500-416 Nitro Express
.404 Jeffery
.425 Westley Richards

 

[arakboss]

I know they are just a hair bigger but there are a bunch of cartridges using the 416 caliber bullets.

I was hoping for something that used the 10mm/40 bullets.

 

[arrowshooter]

A necked down 450 BM or 458SC could be interesting.

 

[oremike]

I was hoping for something that used the 10mm/40 bullets.

well then a PCC/ARrrrr in 10mm magnum might be an option for ya.

 

[arakboss]

A necked down 450 BM or 458SC could be interesting.

Tromix has done something similar with a 375cal bullet but those bullets are costly compared to the common 10mm bullets.

.375 SOCOM - Wikipedia

en.wikipedia.org

I realize there aren't many high velocity 10/40cal bullets out there but with powder coating, many pistol bullets can survive much higher velocities these days. 41cal bullets could be sized down to work as well.

 

[Will_White]

.400AR is a wildcat it uses carcano cases.

 

[arakboss]

.400AR is a wildcat it uses carcano cases.

Bingo, you win. That is what I had in mind.

 

[arakboss]

.400AR is a wildcat it uses carcano cases.

Looks like it didn't make it to market? I guess Tromix was toying with a 10mm SOCOM but it doesn't seem to be on the market either.

 

[Will_White]

Looks like it didn't make it to market? I guess Tromix was toying with a 10mm SOCOM but it doesn't seem to be on the market either.

Yeah any 10mm AR cartridge is a wildcat at this point. Standard 10mm works great in longer barrels, CMMG makes a delayed blowback upper in 10mm I think.