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Author Topic: P-39 37mm Vs. Yak's 37mm.  (Read 1380 times)

Offline Tony Williams

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P-39 37mm Vs. Yak's 37mm.
« Reply #15 on: April 07, 2007, 12:41:46 PM »
The pic below (from the Ammunition Photo Gallery on my website) shows the 37x145R for the US M4 next to the 37x195 for the NS-37. The difference in power is pretty obvious.



The NS-37 gun was also a long way ahead of the M4. Although heavier (170 kg vs 96) it was slimmer and faster-firing (250 rpm vs 140). The main advantage of the M4 is that the long-recoil action would have given it a softer recoil, much easier to cope with than the NS-37's more violent kick.

However, by the end of WW2 the Russians had the N-37 with the shorter, lower-velocity 37x155 cartridge. This still had a higher muzzle velocity than the M4 (690 m/s vs 610) weighed about the same (103 kg) yet fired at 400 rpm. This saw most combat use in the MiG-15 in the Korean War.

Tony Williams: Military gun and ammunition website and discussion forum
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Offline Puck

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P-39 37mm Vs. Yak's 37mm.
« Reply #16 on: April 07, 2007, 02:20:35 PM »
Quote
Originally posted by 68slayr
is the yaks 37mm good for GV killing?


Soft targets only.  No AP rounds were ever made for it.
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Offline Tony Williams

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P-39 37mm Vs. Yak's 37mm.
« Reply #17 on: April 07, 2007, 07:21:59 PM »
Quote
Originally posted by Puck
Soft targets only.  No AP rounds were ever made for it.

They were made, because they were issued to the Il-2M3.  

The Yak-9T was intended as a fighter, so would have carried HE (I can't swear that it wasn't issued with AP, but I've seen no evidence for it).

Tony Williams: Military gun and ammunition website and discussion forum
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