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Old 10-28-2011, 07:40 AM
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Grach Grach is offline
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Wink Hi, Jack!

Quote:
Originally Posted by IceFire View Post
Thanks for digging that up. It's the M23 improved incendiary that I was referencing before. Couldn't for the life of me remember what it was called.
No problem.
At the risk of hijacking this into a .50 cal thread, I will post the original Il-2 Sturmovik game ammo data for the .50 BMG.
Mass is in kg
Speed is m/s (v0)
Power appears to be mass of explosive/incendiary material in kg. (I have no idea if this is 'standardised' or not. e.g. IM was 2x as effective gram for gram as plain phosphorous and different explosives vary in their energy yield per gram.)My notes/whinges are in italics.

Browning .50
// APIT - AP - HE - AP
(Belt composition is unlike anything I've seen in US manuals and documents, presumably a Soviet belting?)

APIT
mass = 0.0485
speed = 870.0
power = 0.002
(Presumably this is meant to be M20 APIT. Mass should be 0.03966, speed should be 888, power should be 0.0018 - that is 0.0009 of IM @ x2 efficiency, they may have added 0.0002 for the trace material as well, then the power actually looks okay. Overall, not bad for an M20 representation.)

AP
mass = 0.0485
speed = 870.0
power = 0
(M2 AP would be mass = 0.04588, speed = 885 power = 0. So not too far off the mark either.)

HE
mass = 0.0485
speed = 870.0
power = 0.00148
(Okay, this is the WTF? moment! There was no US HE round for .50 BMG in or before WW2. The only thing I can think of is that this is a Soviet 12.7mm MDZ-3 HE bullet loaded into a BMG case. Apparently this did happen as L-L ammunition was also supplied as components. So, no US equivalent for this!)

************************************************** *******

I'm wondering if these data are all for Soviet 12.7mm ammunition types actually, as the weights are heavier and the velocities are a little lower than is usual for .50 BMG. Which is about right for 12.7x108mm...

Hmm.

Hopefully TD can use some of this data if they care to as it would be nice to have the correct ammo types.

Maybe we should start a .50 ammo thread... I can see it now. Out of the woodwork they will come, the lovers and the haters...
Perhaps not then.
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