question about the waffe 0725

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daveh
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question about the waffe 0725

Post by daveh » 31 May 2003 14:30

I have seen reference to the waffe 0725 tapered bore gun as a possible tank mounted weapon eg on the VK 36.01 (waffe 0725) (see Jentz and Doyle Germany's Tiger tanks vol.1)

Is this waffe 0725 a tank mounted version of the 7.5cm Pak 41 tapered bore weapon?.

If not can anyone provide further details about its design and performance.

Thanks in advance

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Robert Hurst
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Post by Robert Hurst » 02 Jun 2003 14:40

Hi Daveh

The only info on the Waffe 0725 that I have is as follows: This was an experimental gun based on the Gerlich principle, which involved the use of a tapered-bore barrel of 75/55 mm, and a skirted projectile, the skirts of which were squeezed down as the projectile passed along the bore of the barrel, thereby increasing the velocity of the projectile. The rounds used had a core of tungsten-carbide, the shortage of which caused the discontinuation of the experiment.

The above text and two photos were taken from "Encyclopedia of German Tanks of World War Two", by Peter Chamberlain and Hilary L Doyle.

Although the following data which is taken from "German Artillery of World War Two", by Ian V Hogg is specifically for the 7.5 cm Pak 41, which was another of the Gerlich type tapered-bore weapons, it can be used to illustrate the kind of performance figures that one would presume would have pertained to the Waffe 0725 if it had come into operational service. I have also included a photo of the type of tungsten-cored shot fired by the 7.5 cm Pak 41. The photo is from the same source as the data underneath.

Firing standard tungsten-cored projectile weighing 2.59 kg (5.71 lb)
Muzzle velocity: 1,125 m/s (3,691 f/s)
Penetration at 250 m: 226 mm (8.90 in) at 0 degrees; 185 mm (7.28 in) at 30 degrees.
Penetration at 500 m : 209 mm (8.23 in) at 0 degrees; 171 mm (6.73 in) at 30 degrees.
Penetration at 1,000 m: 177 mm (6.97 in) at 0 degrees; 145 mm (5.71 in) at 30 degrees.
Penetration at 1,500 m: 149 mm (5.87 in) at 0 degrees; 122 mm (4.80 in) at 30 degrees.
Penetration at 2,000 m: 124 mm (4.88 in) at 0 degrees; 102 mm (4.02 in) at 30 degrees.

Regards

Bob
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daveh
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Joined: 11 Feb 2003 18:14
Location: uk

Post by daveh » 02 Jun 2003 15:39

Many thanks Robert for the information.

The waffe 0725 is noted in Jentz (p.19) as being a 7.5cm/5.0cm weapon, rather than a 7.5cm/5.5cm gun as you note. The Pak 41 was a 7.5cm/5.5cm weapon.

I have seen many references to the Pz III with waffe 0725 and the suggested use of the waffe 0725 in the VK 36.01. If a description is given it is of the Waffe 0725 being a 7.5cm/5.5cm gun.

Given the standards of research of T Jentz and his statement

.
If it couldn't be found in an original document, photograph...it isn't in this book


[Introduction to Volume 1 of Germany's Tiger Tanks]

It would appear that the waffe 0725 is a different weapon to the Pak 41.

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