Straight from Wiki:

The Ho-103 (Type 1) was a Japanese aircraft machine gun widely used during World War II. It was based on the American Model 1921 aircraft Browning machine gun but achieved a higher rate of fire by using a smaller, slower Breda (Vickers) cartridge . Because of this, the gun was frequently loaded with explosive or incendiary ammunition in an attempt to increase terminal effect on aircraft.

So to model ALL Japanese aircraft correctly that carried 12.7 guns every thrid round is explosive.

Again, according to British Ordanace testing the Japanese 12.7 explosive round hit almost as well as a20 mm explosive round. This would explain the HIGH rate of Oscar kills during WW2.

quote:

Again, according to British Ordanace testing the Japanese 12.7 explosive round hit almost as well as a20 mm explosive round.

Supply this article please.

This will end well.

quote:

Originally posted by Terrenceflynn:
Straight from Wiki:

This in and of itself says something about accuracy.

Even if the Japanese had invented a miracle 12.7mm cartridge, which they did not, it would not be a good argument for the 50% kill ratio of the Ki-43, simply because that weapon was not unique to the Ki-43.

*K2...don't do it, walk away, just ignore it...go, now, stop, don't don'T DON'T!.....dang, too late*

Once again..... http://www.quarry.nildram.co.uk/WW2guneffect.htm

Okay first off let's compare specs or 5 types of ammunition.

The Japanese 12.7x81 Semi Rimless
The U.S. 12.7x99 Browning
The Japanese Army 20.0x94 from the Ho-5
The Japanese Navy 20.0x101RB from the Type99-2
The German 20.0x82 from the Mauser 151/20

ROund Destructiveness:
CARTRIDGE...TYPE...ROUND WEIGHT...MV M/SEC...PROJECTILE WEIGHT GM...% HEI CONTENT...DAMAGE...POWER
12.7x81SR...AP/HE...82...760/770...35.4/33...-/2.2...27/31...3
12.7x99...API...112...890...43...2...46...4.6
20x94...AP/HE...250/213...700/730...112/79...-/12...78/127...11
20x101RB...HE...222...750...128...6...154...15
20x82...API/HET/HE/(M)...205/183...720/720/800...117/115/92...3.1/3.2/22...110/109/236...16

Okay....That will start us off you can read the rest yourself......That said, I think from those numbers it is very obvious that the Japanese Ho-103 "round" had much less punch then the Ho-5, or Type99-2 let alone the 151/20. As to the weapon firepower you can find that as well on the charts.

Past that what they fail to mention is that the Japanese 12.7 explosive round had a VERY bad habit of exploding upon contact. Now that may sound good, yet in reality wherein most other explosive rounds had a split second delay which would allow them to enter a confined space enhancing the explosive effect, the Japanese round would explode on the surface of the skin of the aircraft actually causing the energy to work against the fragments pushing them back away from the target.

Think of it as having a firecracker go off in your closed fist vs. on your open palm. The first way it blows your hand apart, the second it does nothing.

Now, that may of been corrected as the war progressed, yet as far as this scenario goes relating to say 1942, it was not.

The Japanese round also did not have the ballistic energy of its U.S. counter, and at the ranges often fired at was ineffective due to its explosive response.

K2

As currently modelled, every heavy machinegun in IL-2 (apart from the .50cals on some newly added mod planes) has explosive rounds in its belting.

I have been looking for that table and could not find it, thanks LEBillfish.

Yes, but can they destroy a Tiger?

quote:

Originally posted by Sillius_Sodus:
Yes, but can they destroy a Tiger?

A European Tiger or an African Tiger?

K2

quote:

Originally posted by LEBillfish:

quote:

Originally posted by Sillius_Sodus:
Yes, but can they destroy a Tiger?

A European Tiger or an African Tiger?

K2

Odirroh

"Huh? I... I don't know that"??aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

LOL! Great!

quote:

Originally posted by Waldo.Pepper:

quote:

Again, according to British Ordanace testing the Japanese 12.7 explosive round hit almost as well as a20 mm explosive round.

Supply this article please.

Seconded.

I fail to see how an 82 gram HE round, with less than 2 g of HE filler, hits as well as a 200-250 gram round, with anywhere between 8 and 25 g of HE filler.

quote:

Originally posted by Sillius_Sodus:
Yes, but can they destroy a Tiger?

Funny thing here is that .50cal in IL-2 can destroy a Tiger.

If a top hatch is open (like when operating an AAMG) then there isn't much to stop a bullet getting in is there?

Other than that...

quote:

Originally posted by M_Gunz:
If a top hatch is open (like when operating an AAMG) then there isn't much to stop a bullet getting in is there?

Other than that...

Sure there is.......The commanders head.....

K2

Oh wow here we go onto that fairy tail again.
50cal destroying tigers yeah, but the 75mm shell of the Shermans bounced off, how does that fit?

Guess that is IL2 logic the smaller the shell the stronger and more effectiv especially when it is called .50cal it can do anything.

Just waiting for the stories of it taking out bunkers with over two meter thick steel concrete walls............

quote:

Originally posted by F19_Orheim:
"Huh? I... I don't know that"??aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

You beat me to it!

Great comeback btw LB

quote:

Originally posted by RSS-Martin:
Oh wow here we go onto that fairy tail again.
50cal destroying tigers yeah, but the 75mm shell of the Shermans bounced off, how does that fit?

Shermans don't fly. Nor were they all armed with the 75/38. Nor did they all shoot the front hull or turret.
There is record of an M-8 engine-killing a Tiger from under 100 ft directly behind with a 37mm gun.

I wouldn't give credence to a plane killing a buttoned-up Tiger with 50 cals. If that could happen they wouldn't
have bothered with bombs and rockets. Even 20mm AP would be a stretch though those engine vents at the back....