Quote:
Originally Posted by DRG
It looks like Wiki is using Ivanov's numbers. 8 seems more likely but this info has me questioning the sabot range given in the game. It would appear in game terms the weapon range should be 20 not 25 and the sabot range 10
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It's a squeeze bore weapon with only APCNR available as anti-tank ammunition. I don't know what kind of sights the gun had, but extrapolated from Gander & Chamberlain data it should be able to penetrate about 10mm still at 1500 meters (49mm even at 800 meters, which is their last data point; I extrapolated linearly from 600, 700 and 800 meter numbers). APCNR projos had quite good external ballistics due to high sectional density and relatively low drag (unlike APCR/HVAP) and were similar to post-WW2 APDS projectiles in that regard.
These are the Gander & Chamberlain numbers; first column is range in meters, second is penetration at 0 degrees and third column at 30 degrees:
100 94 69
200 86 65
300 79 60
400 72 56
500 66 52
600 60 48
700 54 44
800 49 41
I don't know where Wiki gets their "effective range". It might be the historically preferred engagement range, which however is not at all the same thing as effective range. In general the whole concept is rather poorly defined; for example AT rifles typically had an "effective range" of about 500-600 meters against their primary targets (= tanks), but they were useful against light armor (armored cars and APCs) and unarmored vehicles at much longer ranges.
For example the Boys ATR had sights to 500 meters only (300m in later versions), but the gunners compensated by aiming at the top of the target instead of center if they had to shoot at longer ranges. The flat trajectory (
i.e. low drop) of the bullet made that quite effective when shooting vehicle-sized targets (target height 1.5 meters or more). Many other ATRs even had sights to 1000-1500 meters just for plinking light armor and unarmored targets, even though fire against tanks was usually opened no further than at 300 meters and often much closer.