/k/ - Weapons

Because 20mm is a shit cartridge.

>>605115

With proper ammo its enough to disable enemy IFVs and APCs, not to mention it can clean rooms in buildings across the street or something similar (could be useful in urban warfare)

>>605115

>Shit

>Used by every modern military since WW1

But you know better huh?

Cost, to get any practical use out of a 20mm you need to be able to program airburst rounds meaning both the gun and the ammo are expensive.

>>605118

You aren't going to be firing AP 20mm from a normal gun due to the huge recoil. inb4 pic of the 20mm rifle it's so good no one fucking uses it

>>605122

>you need to be able to program airburst rounds meaning both the gun and the ammo are expensive.

I kinda dont see how cost is an issue for modern armies, basic equipment for a US soldier is over 10.000$ worth at this point, and most of western modern IFVs use programmable airburst munitions so i dont see why specialist units cant get some hand held high tech goodies too

>>605123

If you are talking about specialist units then I agree that cost isn't an issue but the west in general is drastically cutting military spending at the moment because it just isn't sustainable.

It's all good and well to spend $10k per man in peace time or when fighting sand people without a chance but politicians have started to realize that in a real war where the outcome actually matters $10k per man doesn't really work when you need millions of men.

>>605119

But a disarmed Australian certainly knows BEST, right?

>>605107

For the huge recoil you only get to fire a tiny HE projectile with not-so-stellar accuracy and ballistics. And both the weapon and ammunition are too heavy for a single soldier to carry in a significant quantitiy. You are better off if he is lobbing bigger grenades against closer targets, because then he can decide the outcome of a firefight.

>>605125

But some Amerimutt has personal experience with 20mm

>>605107

>Why is this very complex weapon system with limited use not more common?

Dunno.

>>605129

But Ian says its pretty simple not really complex construction

>>605130

Correct me if I'm wrong but isn't that thing only impact detonation without any way to program airburst?

>>605131

1:43 in a vid

>>605132

He is talking about the XM25, not the one in that video, keep watching.

>>605133

Well that was embarrassing, sorry

>>605107

Because 37mm and 40mm are better.

>>605107

I need a honest answer: is this bait? Even a single small 30 mm grenade that requires no individual gun can wreck everyone within 7 meter radius.

>>605107

Because there are 40 mm hand held guns and they are much better sized for the job.

>>605118

With proper ammo a 7.62 NATO can defeat APC and IFV.

>>605119

It's used for a variety of reasons and it always ends up being abandoned. The problem is that we have a lot of overturn in decision makers and they never learn from mistakes of predecessors.

20mm is the WORST compromise between mass, price, and effect. Especially fused 20mm.

30mm is the lowest a person should go if they want a cartridge to carry HE filler.

>>605202

Try lobbing grenades over the distance of 100 meters

>Why arent 20mm hand held guns more common

Common where? With infantry?

I don't think having an unwieldy brick which caliber consequently reduces effective range, total ammo capacity and mobility of a combatant is gonna work very well.

40mm and rifle grenades got that covered. Also why the fuck would you engage an IFV with 20mm that's not being spat out of your own IFV?

>>605184

> but seized all their patents because reasons

Because the US army as tried to find a decent alternative to the M79 since 1962…

And still can't.

>>605467

>What is wrong with the M203?

Accuracy compared to the M79 is… quite poor, especially at range.

>>605487

Nice meme weapon, but no way anyone other than SF doing some Tier √-1 level shit is going to get more than one of those to use.

There needs to be something that is actually affordable to use, and that "aint" it.

>>605496

https://www.thefirearmblog.com/blog/2017/12/11/hungarian-amp-69-grenade-launcher-ak/

http://www.kalasnyikov.hu/dokumentumok/amp-69-manual.pdf

The article fails to mention it, but those rifle grenades have rocket motors. In the last page of the PDF you can see that the maximum range is a mere 450m for the HE, and it's rather inaccurate at that point. But if you designed a rocket-propelled rifle grenade from the ground up today, then you could make something that has decent range and accuracy without needing a guidance system.

>>605497

You seem to forget that the M203 is the hand-held weapon, while that 30mm is for AGLs. Of course NATO's AGLs are retarded because they use the same cartridge with a longer case, but you should still compare that to the GP-30's grenades.

>>605515

The large American grenade launchers use the same warhead, just a bigger boost package. It's also 5m kill zone….

As for underbarrels, that's an even worse comparison, GP30 is caseless and BS-1 is noiseless, both light years ahead of M203 tech. The grenades also have a kill radius 1m larger.

it would cut the cost just to have impact detonation and a smaller air burst supply used for whatever operations they want to use but why not use what's already widely available instead of sinking money into a shoulder rape machine

just use a recoilless rifle at that point and besides just lob grenades like a retard with a baseball

Because we're waiting for proper servos to be implemented into the power armor in order to support sustainable accuracy through the power-assisted muscular chassis.