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SdKfz 250/10 3.7cm Pak (Self propelled A/T)
Ordnance classification - SdKfz 250/10

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The SdKfz 250/10 3.7cm Pak was designed in 1940, manufactured by Westerhutte, Deutsche Werke and Wumag based on the existing half track SdKfz 250 and was in use from 1941 to 1945.

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General Details
Specifications
Operational Date(s)1941 - 1945
Ordnance classificationSdKfz 250/10
Quantity Produced0
Weightunknown
Crew4
M.G's small1
M.G's large(>10mm)n/a
Length4.77 mtr
Width1.97 mtr
Height1.97 mtr
Engine Details/Performance
Max Road Speed38 mph
Max Cross Country Speed19 mph
Range Road200 miles
Range Cross Country100 miles
Fuel TypePetrol
Fuel Capacityunknown
Horse Power100 hp
Power/Weightunknown
General Information
The SdKfz 250/10 3.7cm Pak was designed in 1940, manufactured by Westerhutte, Deutsche Werke and Wumag based on the existing half track SdKfz 250 and was in use from 1941 to 1945.

The vehicle was powered by Maybach 'HL42TUKRM' petrol powerplant producing 100 HP which could drive the vehicle on roads at up to 38 mph with a range of about 200 miles before refuelling. Its cross country performance was good providing a max speed of about 19 mph and a range of about 100 miles.

It was armed with 1 light machine gun , a 7.92mm MG 34. Its main armament consisted of a 3.7cm PaK 35/36 L/45 which could penetrate 30 mm of flat plate at 800 metres


Armour Details
Turret
Frontn/a
Siden/a
Rearn/a
Topn/a
Superstructure
Front10mm@30°(12mm)
Side8mm@35°(10mm)
Rear8mm@17°(8mm)
Topn/a
Hull
Front15mm@12°(15mm)
Side8mm@30°(9mm)
Rear8mm@45°(11mm)
Top6mm@90°(6mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 15 mm - Minimum 6 mm



Weapon Details
Flag
 7.92mm MG 34
7.92mm Maschinengewehr 34
(translates as Machine Gun) 		Blank
photo of 7.92mm MG 34 from Bundesarchiv(https://www.bild.bundesarchiv.de)
History
Derived from the Solothern Maschinengewehr Modell 30, it became the main machine gun for the German army. It could be fitted with a bipod for infantry use, an Anti Aircraft mount, or a heavy tripod to turn the gun into a heavy machine gun.
ManufacturerMauser-Werke
Manufactured1936 - 1943
Calibre7.92mm
LengthL/79
Rate of Fire800 rpm
Number of Rounds 2010
 
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
S.m.K.H tungsten cored
(AP Standard Small Arms) 		7.92mm 0.013Kg 910M/Sec
Quoted Penetration 13mm@100m/30°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.33 1.04
Penetration(mm@30°) 15 11 6
Penetration(mm@0°) 18 13 7
Hit Probability(%) 98 98 98


 
S.m.K
(BALL Standard Small Arms) 		7.92mm 0.012Kg 785M/Sec
Quoted Penetration 8mm@100m/30°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.2
Penetration(mm@30°) 5
Penetration(mm@0°) 6
Hit Probability(%) 98


Weapon Details
Flag
 3.7cm PaK 35/36 L/45
3.7cm Panzerabwehrkanone 35/36 L/45
(translates as Anti Tank Gun) 		Blank
photo of 3.7cm PaK 35/36 L/45 from Wikipedia
History
The standard German anti tank gun at the start of the war, had been tested in the Spanish Civil War, and numbers sold to Russia before 1940
ManufacturerRheinmetal
Manufactured1935 - 1942
Calibre37mm
LengthL/45
Rate of Fire13 rpm
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
3.7cm Pzgr Patr 18
(AP Armor Piercing) 		37mm 0.68Kg 762M/Sec
Quoted Penetration 31mm @ 500mtr/30° ( ≈ 35mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.28 0.59 1.34 2.33 3.7 5.71 8.97
Penetration(mm@30°) 41 38 32 25 20 15 11 6
Penetration(mm@0°) 48 44 38 30 24 18 13 8
Hit Probability(%) 98 98 98 90 54 22 3 1


 
3.7cm Pzgr 40
(AP40 Armour Piercing Tungsten Cored) 		37mm 0.35Kg 1030M/Sec
Quoted Penetration 68mm @ 100mtr/30° ( ≈ 78mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.1 0.21 0.46 1.14 2.25 4.34 9.72
Penetration(mm@30°) 68 60 51 38 26 16 7
Penetration(mm@0°) 79 70 59 44 31 19 9
Hit Probability(%) 98 98 98 96 57 15 1



3.7cm Sprgr Patr
(HE High Explosive) 		37mm 0.61Kg 700M/Sec 0.025Kg explosive
Maximum Range not shown as gun elevation is limited
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.15 0.3 0.64 1.46 2.54 4.03 6.22 9.76
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.15 0.3 0.64 1.46 2.54 4.03 6.22 9.76
Hit Probability(%) 98 98 98 88 44 15 3 1
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill0 mtr Burst radius Infantry in open 66% kill0 mtr
Burst radius Infantry in open 33% kill1 mtr  Armour Penetration inc roof at 1 mtr0 mm
An explosion within 0 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 1 mtr of infantry in the open will cause 33% casualties.
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will not cause any significant armour damage.


 
3.7cm Stielgrante 41
(HEAT High Explosive Anti-Tank) 		37mm 8.6Kg 110M/Sec
Quoted Penetration 180mm @ 0mtr/0°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.93 1.92 4.08
Penetration(mm@30°) 180 180 180
Penetration(mm@0°) 180 180 180
Hit Probability(%) 98 69 15

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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