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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, particularly in larger calibres (12.7+mm).

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Guns for light aircraft   Aircraft Guns

Started 2-Aug by renatohm; 2009 views.
renatohm

From: renatohm

2-Aug

Greetings.

I'm writing a blog post about the Super Tucano, and one of the topics is about a possible alternative to the M3 12.7 machine gun.

Which other guns would you suggest for it, either wing mounted and podded? That is, more oomph than M3, decent ROF, but not too much weight / bulk / recoil - each of which is problematic for such a small platform, let alone more than one.

I thought about the M39 and BK27 (although I suspect that it would be too much).

Red7272

From: Red7272

2-Aug

Nexter M621. 47 kgs compared to 30 kgs of the M3 browning and 38  kgs of the M2 browning. 

Red7272

From: Red7272

2-Aug

QuintusO said:

M230.

Assuming money is no object. The ammunition is astoundingly expensive compared to .50 ball and even 20 mm. 20 mm probably has a greater range of ammunition types as well. 

autogun

From: autogun

3-Aug

Depends on how critical the weight issue is: the smallest and lightest 20 mm cannon option would be the Denel GA-1 at 39 kg, which is nothing more than a licence-built MG 151/20 (I wonder if RWM still collects royalties?).

QuintusO

From: QuintusO

3-Aug

Betcha 20x102 and 30x113B are dramatically closer in price than 20mm is to .50.

Red7272

From: Red7272

3-Aug

QuintusO said:

Betcha 20x102 and 30x113B are dramatically closer in price than 20mm is to .50.

More unsupported claims? Should be easy for you to prove that one big mouth. 

QuintusO

From: QuintusO

3-Aug

Do you not know what the word "bet" means?

QuintusO

From: QuintusO

3-Aug

womp womp

20mm is right down the middle for cost, as it turns out!

$2.48 per shot for .50 M8 API, page 100
$60.67 per shot for M940 20mm MP-T SD, page 117
$127.40 per shot for M789 30mm HEDP, page 162

The analysis changes when you consider budgets, though. A million rounds of M8 costs you $2.48 million, which would buy you 40,877 20mm rounds, or 19,466 30mm rounds. So 20mm is much closer in affordability to 30mm than .50.

In reply toRe: msg 9
QuintusO

From: QuintusO

3-Aug

I should also note that M940 is probably more expensive than PGU-28A/B, due to the latter being bought in (slightly) larger quantities. However, the USAF justification book is much less clear on unit costs and their accounting is different from the Army's, and I wanted to compare apples to apples.

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