>>628575

First of all, >>628323 mostly covers this thread. SMGs are only good for police duty where you do want to limit your firepower. And at that point a machine pistol with a brace and a RoF limiter would be perfectly fine.

>>628575

Submachine gun was invented by general Thompson to market his automatic weapon. Machine pistol would make a lot more sense, after all most languages use that term for this category of weapons. It's similar to how German and English uses Sturmgewehr (and its translation), which was a propaganda term. Maschinenkarabiner (machine carbine) would be a much better name.

>>628580

What is your definition of a submachine gun, machine pistol, pistol, rifle, etc?

>>628581

The point of a submachine gun is that it fires pistol ammunition. The point of a pistol is that you can use it effectively with one hand if you have to, and that greatly limits the cartridge. With all of that your only option would be 6.5mm CKJ, a Swedish cartridge based on 9mm Parabellum. But that has to use a tungsten core, which makes it way too expensive for a mere pistol cartridge.

>>628583

>Sure, there's still BC to consider but this still shows something.

Pistol cartridges are useless even at 200m, so they shouldn't be the main weapon of an infantry squad even if you adhere to the 300m doctrine that dominates current thinking. And if they aren't the main weapon, then you are just adding an other weapon to the mix for no good reason.

>and reveal how close to SMGs our modern rifles are in terms of power

That's a problem with the modern idea of the assault rifle, it's just a glorified submachine gun.

>at least take .357 magnum rimless and use a revolver with a moon clip to call it "pistol"

Or just take any weapon chambered for 9x25mm Mauser Export.

>>628588

>to please those in need of PDW

That's why I pointed at the PDW thread, we will end up discussing the same things. See: >>628402

>9x25ME would have a hard time fitting in the grip of a modern handgun when even 10mm does

It's literally as long as 7.62 Tokarev, and that cartridge is longer than 10mm Auto. It obviously won't fit into a weapon designed for 9mm Parabellum, but you could redesign nearly any of them for it without changing the external dimensions. Like that relatively new chink pistol for 7.62 Tokarev that is otherwise a straight copy of an older Sig Sauer pistol.

>posted it one one of the previous threads but nobody r8ed

The problem is that you'd have to make this cartridge, load it into a pistol, and do some tests to figure out what it can really do. You could actually do it if you had 10mm Auto brass and reloading tools for .357 SIG. Making the barrel would be a bit trickier, but you'd just have to push the .357 SIG's tool down a bit deeper to cut the chamber.

>>628591

I messed up the name.

http://www.gotavapen.se/gota/cbj/cbj_crtg.htm

http://www.cbjtech.com/ammunition/6-5x25-cbj/6-5x25-cbj-ball/

>>630033

That one is too late to the game.

>>630093

>357magnum rimless, improved 357sig or something else

I keep telling you that 9x25mm Mauser Export is what you are looking for.

https://forum.cartridgecollectors.org/t/9x25-mauser-ballistics-and-some-other-questions/13140/23

>>630112

Why would it be a bad option? I can't recall any actual arguments against the design of the cartridge itself.

>>630113

Non-bottlenecked pistol cartridges were good enough for two world wars.

>>630057

I wonder, would the trigger pull be consistent and comfortable in semi-auto? After all, it's literally simpler than what the M1898 Mauser has, and so it should be possible to fine-tune it.

>>630094

>easily replaceable sights are a thing i'd like to see on any gun and i don't like that only pistols and tacticool ARs usually have it.

Would small sections of picatinny rail work for that on pistols?

>>630117

That's a Kucher K-1, I'm planning to disassemble one in the near future.

>>630120

>it's too long to fit into a semi-auto pistol grip

And as I have said, it's as long as a 7.62 Tokarev cartridge. Actually, it's nominally shorter with 0.2mm. And as I've also said, it fits into a semi-auto pistol grip. Don't tell me that I found a Russian who never heard of the TT pistol. I'm a proponent of this cartridge exactly because this is as long as its possible, and the only other way to increase case capacity is to increase the diameter. And that decreases the number of cartridges in the magazine, which is not a positive according to current trends.

> Its performance was also a bit lower than 357 magnum from longer barrels based on one of the posts from your link.

At this point you should start considering dedicated carbine cartridges. You can make a superior one if you aren't held back by the inherent limitations of pistol cartridges.