Ruger LC carbine: now in 10mm

[Angel Eyes]

https://www.gunsamerica.com/digest/ruger-rolls-out-the-lc-carbine-in-10mm/

A lot of folks have been clamoring for more carbines and/or braced pistols in this caliber, so this may do well. 

MSRP of $1049 is rather high IMO.

[WLJ]

Want

[BobR]

I remember back in the 80 trying to find a 10mm anything was a chore, now every body and their brother is chambering stuff in 10mm, what a great time to be alive!


bob

[WLJ]

I remember back in the 80 trying to find a 10mm anything was a chore, now every body and their brother is chambering stuff in 10mm, what a great time to be alive!


bob

Gain a following back then and then pretty much died out and you didn't hardly hear anything about it for years and the only thing that really kept it alive were the Glocks chambered for it then just a few years ago it exploded back on the scene.

BTW: I like to refer to 40SW as 10mm Kurz

[bedlamite]

Cool, but at that price I have other priorities.

I never should have sold my 1076.

I'd still like to see a gas operated AR15 in 10mm, should work with a pistol or carbine gas port depending on port and barrel length, and a 6.8spc bolt would fit without modification.

[K Frame]

I wish I had kept my Witness in 10 mm.

Oh well.

[Northwoods]

I look forward to getting the kids off my payroll so I can afford guns and decent wine again.

[lee n. field]

maybe if I was into 10mm already.  And wasn't in Ill-i-noise.

[Angel Eyes]

Cool, but at that price I have other priorities.

From a brief web search, street price appears to be around $730.

I'd still like to see a gas operated AR15 in 10mm, should work with a pistol or carbine gas port depending on port and barrel length, and a 6.8spc bolt would fit without modification.

Have to admit that's intriguing.

[Calumus]

Looks nice; but frankly I’d rather see a couple of 10mm sub compact pistols hit the market. My edc is an XDM elite compact, and it’s still pretty chunky. The Glock 29 is about the same size. Something like a Sig 365 in 10 would be nice. Or an Officer sized 1911/2011.

[HeroHog]

There's always Hi-Point (rolls away!)

[HankB]

I'm a little surprised it's a blowback action for a round like 10mm, doesn't that make it a little harder to suppress effectively? (Aside from arguments of subsonic ammo not needing a 10mm platform.)

Oh, well, whatever floats your boat. It's not for me, though.

[WLJ]

There's always Hi-Point (rolls away!)

Yep

[WLJ]

I'm a little surprised it's a blowback action for a round like 10mm, doesn't that make it a little harder to suppress effectively? (Aside from arguments of subsonic ammo not needing a 10mm platform.)

Oh, well, whatever floats your boat. It's not for me, though.

1 - It's simple
2 - It works
3- Cheaper to manufacturer

On the harder to suppress question. No matter the action the breech isn't (shouldn't) opening until the pressure drops to an acceptable level which should be near enough for all actions to be pretty much the same. The cutting off point for having to go to something other than blowback is weight because as the round increases in power the weight of the bolt in a blowback needs to increase and at what point does that weight become unacceptable. 10mm handguns tend to be not blowback because a 3lb (somewhere in that ballpark) bolt would be completely unacceptable while in a carbine while undesirable you can get away with it.

[WLJ]

Found this handy little chart for the bolt weight needed for various rounds in a blowback

9mm - 1.7lbs
10mm - 2.8 lbs (so I got close in guessing) This would help explain why the LC 10mm weights 7.4lbs

https://10mmautocombat.wordpress.com/blowback-bolt-calculations/

[HankB]

. . . No matter the action the breech isn't (shouldn't) opening until the pressure drops to an acceptable level which should be near enough for all actions to be pretty much the same. . . .

I agree in principle. But I've seen some slow motion films of "breech flash" (as distinguished from muzzle flash) with blowback operated firearms, so what should be happening isn't always the case.

Found this handy little chart for the bolt weight needed for various rounds in a blowback

9mm - 1.7lbs
10mm - 2.8 lbs (so I got close in guessing)

https://10mmautocombat.wordpress.com/blowback-bolt-calculations/

That seems like a lot of reciprocating mass.

[WLJ]

That seems like a lot of reciprocating mass.

You beat my edit above where I added "This would help explain why the LC 10mm weights 7.4lbs"

[WLJ]

Looked it up and the CMMG 10mm carbine, which is Radial Delayed Blowback, is 5.5lbs although admittedly that is with only a 8" barrel.

https://cmmg.com/pistol-banshee-mk10-10mm-8

Them explaining their Radial Delayed Blowback system and how it differs from straight blowback

https://resources.cmmg.com/traditional-blowback-vs.-radial-delayed-blowback

So what is Radial Delayed Blowback?
The simplest answer is it's a patented system we created to eliminate problems with traditional blowback systems found in pistol caliber AR15s.

In a traditional blowback system, only the bolt weight and action spring tension keep the chamber closed. Heavier and more powerful cartridges need more weight.

With radial delayed blowback, the carrier design incorporates a bolt that must be forced to rotate before it will cycle. This rotation slows the action down enough for chamber pressures to drop to safe levels before cycling. The bolt rotation requires enough force that it also negates the need for heavy buffers, bolts, and action springs.

[WLJ]

And don't forget Roller-Delayed Blowback as used in various HK and similar firearms