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Military Guns and Ammunition

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This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.

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Squad Support Weapon   Army Guns 20+mm

Started 17-Jun by stancrist; 22220 views.
schnuersi

From: schnuersi

22-Jun

stancrist said:

I don't get the connection. Are you saying it's impossible to make a 30mm (or larger caliber) grenade launcher?

He is saying that a 30 mm GL will not be comparable to a 30 mm AC.

For starters the shell of a 30x173 carries a lot of KE. This makes shrapnel type ammo very effective. A 30 mm GL will not have this and thus can not use this kind of ammo effectively. It will have to be a HE-Frag. Which works different and has a different effect.
A 30 mm HEI shell weights >350 g. That is roughly one third more compared to a 40 mm grenade. You can do the math easily to figure out the possible MV with a still barable recoil.

EmericD

From: EmericD

22-Jun

stancrist said:

???  I don't get the connection.  Are you saying it's impossible to make a 30mm (or larger caliber) grenade launcher?

No, I'm saying that you can't make a man-portable grenade launcher with the destructive power of a 30 x 173 mm AC, just like a 12 gauge shotgun will not deliver the destructive power of a 120 mm canister shot, even if the concept is "the same".

stancrist

From: stancrist

22-Jun

EmericD said:

I'm saying that you can't make a man-portable grenade launcher with the destructive power of a 30 x 173 mm AC...

Okay.  The only trouble is, I never said a grenade launcher would have the same destructive power as a 30mm cannon. 

What I said is the video is an example of airburst fragmentation which makes me think the concept could possibly work.

The 30mm cannon airburst videos show fragmentation effect much better than, for example, 40mm grenade airbursts.

40x53    https://youtu.be/BPaC1LTrHy0?t=545

30x113  https://youtu.be/yuV7Pd4dheI?t=47

Murpat

From: Murpat

23-Jun

300 metres and you are struggling - even with  IR - except that it is high power - e.g. vehicle powered.

EmericD

From: EmericD

23-Jun

stancrist said:

You have a very similar "failure point" with rifle grenades. You can't load the grenade onto the rifle, take precise aim, and launch the grenade, in just 2 seconds. You need to expose yourself and stay perfectly motionless for much more than that.

Missed your edit.

Are you really (and seriously) saying that you can't point & shoot a rifle in less than 2 seconds, because you can find a random video on Youtube with someone who is not pointing & shooting a rifle in less than 2 seconds?

When doing patrol, the point man already loaded the grenade on the rifle, he just need to point the rifle, shoot, and the grenade is airborne.

EmericD

From: EmericD

23-Jun

stancrist said:

What I said is the video is an example of airburst fragmentation which makes me think the concept could possibly work.

The concept of firing bursts of high power 30 mm AC canon at targets is working, we already know that. It can even defeat tanks.

Thinking that an individual weapon could do something remotely similar is, well, wishful thinking.

stancrist said:

The 30mm cannon airburst videos show fragmentation effect much better than, for example, 40mm grenade airbursts.

40x53    https://youtu.be/BPaC1LTrHy0?t=545

30x113  https://youtu.be/yuV7Pd4dheI?t=47

Do you mean that the 40 x 53 mm is not effective enough and that we need a more powerful grenade?

If so, what is the rationale behind advocating for an individual, man-portable, grenade launcher, that will definitively be less powerful than a 40 x 53 mm?

Or maybe you are thinking about using a fully dressed Mk47 (with tripod and FCS) as the squad main asset, while the rest of the squad is issued a MP7, a spare mag and as many grenades they could carry?

That would probably work, but wouldn't be a very american way to fight!

graylion

From: graylion

23-Jun

EmericD said:

That would probably work, but wouldn't be a very american way to fight!

No? Lobbing HE at everything in sight strikes me as very American ;)

Something that surprises me a little is that nobody has proposed a 30x113 gas loaded, mechanically fired dismount gun with a tripod ;)

  • Edited 23 June 2022 10:14  by  graylion
taschoene

From: taschoene

23-Jun

graylion said:

Something that surprises me a little is that nobody has proposed a 30x113 gas loaded, mechanically fired dismount gun with a tripod ;)

It's been proposed.  (But I suspect you knew that...)

graylion

From: graylion

23-Jun

I didn't actually :)

In reply toRe: msg 59
Mr. T (MrT4)

From: Mr. T (MrT4)

23-Jun

Radar chronographs becoming smaller although magnetic field MV measurement muzzle device is probably still the most robust and cheap way to measure MV and possibly program Airburst ammo.

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