Thoughts on pistol caliber carbines?

[swampcrawler]

That shoots 445 supermag

'scuse me while I wipe the drool off my keyboard

 

[Oceanbob]

I have shot several hundred .40S&W rounds through my 10mm and have found no signs of firing out of battery. Observations show the round stripping from the mag and rising behind heavy rifle-like extractor which is stronger than the firing pin and hold the headspace correctly. This gives a very cost-effective shooting option.

Mike

Yep. Several dozen Glock 20 (10MM) owners, ran some tests on the .40 in the GlOCK platform. I personally ran 620 rounds of .40 thru my GLOCK 20SF in a two day period. Not a single failure. I even loaded half dozen mags with alternating 10MM-.40-10MM-.40 (kinda funny looking) and those ran 100% as well. A nice loud CRACK from the hot 10MM and a weak POP from the .40. Every other round.

And yes, the round 'slides up from below' behind that big extractor. Even if per-chance the extractor somehow missed catching the rim of the case, worse thing to happen would be the round moves forward beyond the reach of the firing pin. Just open the slide and let the round drop out. Never happened yet however. No chance for any Kabooms.

This isn't advised on any other platform. It just works on the GLOCK is the opinion. Like RELOADS, GLOCK will never recommend this. SO DON'T DO IT.





(others have a different method of case capture; others have no chamber support...etc..)

After about 100 rounds I did whip that glock nylon brush into the chamber. Not much residue at all.

Be well
Bob

 

[Deer_Freak]

I own a Hipoint 9mm carbine. There was just as much plastic, in fact more plastic on the Beretta. In fact, the storm I was looking at has the sights mounted in plastic pillars. I am not going to pay $800 for that. A local police department issues the storm to some of the officers. While the storm has served their needs without anything breaking. None of the officers carry the storm in their in car gun rack. They just tossed them in the trunk and they don't recommend the storm either. Yes, the Hi Point looks like something from the planet of the apes. But I paid $100 for it used and it has given me no problems.

 

[Dirty Bob]

How about a .357 Max. that fits in a laptop case when taken down?

The beefy barrel makes it surprisingly heavy, but it also tames recoil, and the short barrel makes it very handy on brushy trails.

For something in an autopistol caliber, I give you the Mech-Tech .45 ACP. With 10- or 11-round mags, it offers plenty of firepower and can be discretely transported in the case shown. The M-T is kinda' heavy, but it's very reliable and one of the funnest guns I've ever fired.

Finally, with a Rossi 92 .45 Colt with a 24-inch barrel and subsonic loads, the report is mild, while downrange power is still impressive. For absolute practicality, I vote for the single shots and lever guns in .357 Mag., .44 Mag., or .45 Colt. For fun, go with whatever tickles your fancy!

Respectfully submitted,
Dirty Bob

 

[Speedo66]

Folded, a Kel-Tec Sub2K fits in the average laptop computer shoulder bag.

Invisible nowadays, with pockets for plenty of magazines. Extra points for having a computer brand printed on it.

 

[Jericho_223]

Happy Storm owner

As I've posted in other threads here, I'm a very happy owner of the Cx4 Storm. Mine is in .40 and I love it. It's light, controllable, the recoil is practically nonexistent, and I have no problem putting foregrips, lights, or whatever else I want on it. This very quickly became my bedside gun.

On a slightly different note, this is also the rifle that I used to introduce my girlfriend to shooting, and she instantly became a huge fan.

 

[barnbwt]

Peak pressure isn't the real problem in blowbacks; duration is. The combination of slightly higher pressure, significantly heavier bullet, and much wider pressure spike due to the additional powder mean that the cartridge must be held close to battery for more time. Bolt weight is the ONLY factor when designing blowbacks, and most designs try to keep it as light as necessary in semi-autos so as to speed up cycling, reduce felt recoil (from bolt slam), and increase extraction reliability. Simply boring out a 40 blowback and running 10MM through it is likely to be incredibly dangerous.

Orion's Hammer (an authority on things 'Blowback') lists the recommended bolt weight of a 10MM at 2.8lbs, compared to 2.2lbs for 40 S&W. That's a difference of over 20% in bolt mass. As powder volume goes up, pressure duration will as well, and regardless what the peak is, it's higher than you want vented to atmosphere (i.e. your face ). This rapidly raises bolt weights to ridiculous levels (54.3lbs for 50BMG; I don't want to even know what the Oerlikon bolt weighs) which is why we have locked and delayed breech designs.

An open-bolt design can utilize its forward momentum to "multiply" its effective bolt mass, but since those are off limits to us civvies, we're stuck with simple closed bolt blowback. Since that design is limited to (essentially) a certain threshold of cartridge power if it is to remain "handy," a locked or delayed breech is the way to go when chambering upper-mid pistol cartridges and above. Delayed blowback tends to be hard on brass and has even less operating flexibility (tolerance of different loads) than simple blowback. If the Light Carbine is to be a "jack of all trades" as far as utilizing different loadings and cartridge conversions, it really needs to be recoil or gas operated from a locked breech.

TCB