New .32 Rimless Cartridge

[35remington]

Smaller case head area somewhat balances out higher pressure.

If higher pressure alone was the problem 9mm would be way harder on guns versus say 45 ACP.

[Bigslug]

If we’re gonna do a new gun/cartridge, about something useful? Like legitimizing .41 Special in the L-frame & GP100?

Or how about a 10mm and .40 S&W Auto Rims if you're going down that road?

[P Flados]

50k pressure? That's centerfire rifle muzzle blast out of a handgun right there, no thx. I would also think it would be hard on the gun, especially one that was originally designed for 9x19 at 35k.

I ran the numbers.

Muzzle pressure and charge volume are very close to what you find in a 9mm. Also saw a side by side comparison with the 9mm in the same gun. The shooter really could not tell the difference for muzzle blast or recoil. Unlike the 327, I doubt that it will get a reputation for "excessive muzzle blast".

With the really high chamber pressure that drops off faster than the 9mm, this round will lose less velocity with shorter barrels.

Breech thrust is real close to 9mm, not more than 9mm +P depending on how you calculate effective area. For any gun currently in 9mm, the barrel wall will be thicker and the ID will be smaller so hoop stress on the barrel will be ok. The actual breech face will need to be hardened steel, but this should not a problem for any gun that I know of.

So 30 SC will be fine in today's guns that are available in the 9mm. The high pressure will be a factor for how small they can make any gun designed around the 30 SC, but look at what they have done with downsizing guns for the 9mm.

[FergusonTO35]

Did not know all that stuff, thanks!

[megasupermagnum]

Or how about a 10mm and .40 S&W Auto Rims if you're going down that road?

Yeah, it's called 401 powermag. Fine cartridge, but probably the biggest marketing failure I am personally aware of.

[am44mag]

I think this round could exist within a niche market, much like the 327 Fed does. I don't think it's ever going to replace 9mm, and really I don't think that's what it's going for. I think it might cut into the .380's market though. This round was made for the micro compact pistol market. If a pistol was made specifically for this round, and had the same capacity as most micro 9s, then you could end up with a smaller, lighter, thinner gun with roughly the same firepower. People will buy that. If I wanted a really small gun, I would buy that over a .380.

Why? Why on earth would you rather have this than a 30 carbine, or a 327 federal, or even a good old 32-20?

I can't answer for him, but for me it's simple. None of those rounds will fit in a Glock mag, which is what most PCCs use nowadays. The .30 SC would. When you want an M1 Carbine or a lever action, that's when you pick one of those other rounds.

[rockrat]

Interesting, but running at 50K psi, isn't that going to make quite a muzzle blast/flash, kind of like the 30 carbine Blackhawk?

[uscra112]

Everything has to fit into a Glock mag or an AR mag. Which is why we have the overstressed .300 Blackout. This thing is just following suit.

[megasupermagnum]

Everything has to fit into a Glock mag or an AR mag. Which is why we have the overstressed .300 Blackout. This thing is just following suit.

I think it's great. The sooner we get to a few standardized magazines, rather than every single gun being proprietary, the better.

[P Flados]

Interesting, but running at 50K psi, isn't that going to make quite a muzzle blast/flash, kind of like the 30 carbine Blackhawk?

As noted in post 103, the answer is no. Think closer to the 9mm. Chamber pressure is high, but the pressure drops fast. Look at the difference in case capacity from the 30 SC to the 30 carbine.

[35remington]

The 30 Carbine also uses about 3X as much of a considerably slower burning powder.

[FergusonTO35]

I think it's great. The sooner we get to a few standardized magazines, rather than every single gun being proprietary, the better.

This 100%. Proprietary mags are terrible, just pick a proven design that has been around for ages and roll with it. While we're at it, I'm tired of sporting bolt action centerfires using super expensive low capacity mags. For example, the Savage Axis. Great rifle with expensive crummy mags. All of the .223 versions should use an AR mag, which is available in many different capacities. Those using .308 size cartridges can use AR-10 or M1A style mags. I imagine there is a proven existing mag design for the .30'06 cartridges out there that would work great.

[Tokarev]

Everything has to fit into a Glock mag

Agreed in general but Glock has a weird grip angle, so no, not everything. For those who do not appreciate Glock's angle, it should be Beretta 9x series mag.

I imagine there is a proven existing mag design for the .30'06 cartridges out there that would work great.

Yes. It is BAR.

[uscra112]

Agreed in general but Glock has a weird grip angle, so no, not everything. For those who do not appreciate Glock's angle, it should be Beretta 9x series mag.
.

AMEN to that. I'm a confirmed Glock-hater, and the grip angle is one of the lesser reasons.

[FergusonTO35]

Strangely enough, the grip angle is one thing I like about Glocks. I really don't like the more upright angle that the newer Sig pistols use. Ain't it great to pick what you like?

[Idaho45guy]

Yeah, it's called 401 powermag. Fine cartridge, but probably the biggest marketing failure I am personally aware of.

Probably because it shares it's name with an obscure AMC motor that was also a huge marketing failure.

[Mytmousemalibu]

Magazine standardization is great, makes life easier and cheaper. I would not have bought a Ruger PC Carbine or AR-9 if it wasn't for the Glock mag pattern. Its become the gold standard for pistol mags and is generally very good. The angle of it doesn't mean whatever uses it has to use the Glock grip angle, it is more a function of how 9mm stacks & feeds. Personally I wished the M&P, CZ, Beretta pattern had become the standard. The polymer w/thin steel liner has its drawbacks. An all steel body as the gold standard would have been nice. The Stanag AR pattern is fantastic.

[Tokarev]

Chris,
If it was a petition, I would have signed it right away!

[sharps4590]

I have never had any difficulty finding a magazine for ANY of my revolvers......

I own my share of semi-auto's and I am eternally grateful none of them is a Clock or AR. Not taking anything away from them, lots of folks like 'em and, there's no question they've proven themselves, but I don't. Lots of folks like devilled eggs and brussels sprouts but, I don't like them either.

[Daekar]

I have never had any difficulty finding a magazine for ANY of my revolvers......

I own my share of semi-auto's and I am eternally grateful none of them is a Clock or AR. Not taking anything away from them, lots of folks like 'em and, there's no question they've proven themselves, but I don't. Lots of folks like devilled eggs and brussels sprouts but, I don't like them either.

Now if a good God-fearing man owns to a dislike of Glocks and ARs, well I figure that's his right, and I'd agree with him. But deviled eggs and Brussels sprouts, are another matter...