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Britain - Ordnance Q.F. 6pdr 7cwt MKII MKIV

Showing the details of the shells used(where known)
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Weapon Details
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Ordnance Q.F. 6pdr 7cwt MKII MKIV
(Anti Tank Gun)
Blank
photo of Ordnance Q.F. 6pdr 7cwt MKII MKIV from Wikipedia
History
The 6pdr Mk II—differed from the pre-production Mk I in having a shorter L/43 barrel, because of shortage of suitable lathes. The subsequent Mk IV was fitted with an L/50 barrel, with muzzle brake.
Manufactured1942 - 1945
Calibre57mm
LengthL/43
 
AP(AP)
57mm 2.84Kg 900M/Sec
Quoted Penetration 68mm@915m
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.11 0.23 0.48 1.03 1.69 2.47 3.42 4.61
Penetration(mm@30°) 95 87 77 66 56 46 37 29
Penetration(mm@0°) 110 101 90 77 65 54 43 34
Hit Probability(%) 98 98 98 98 81 48 25 8

Vehicles in our database using this gun
Vehicle NameCommon Name
 AEC Armoured Car Mark II 
 Carrier AEC 6pdr Gun Mk IDeacon 
 Cruiser Mk VICrusader III 
 Cruiser Mk VIICavalier 
 Cruiser Mk VIIICentaur I 
 Inf Tank Mk IIIValentine IX 
 Inf Tank Mk IIIValentine VIII 
 Inf Tank Mk IIIValentine X 
 Cruiser Mk VIII (Cromwell I A27M)Cromwell I A27M 
 Cruiser Mk VIII (Cromwell II)Cromwell II 
 Cruiser Mk VIII (Cromwell III)Cromwell III 
 Inf Tank Mk IVChurchill 3 - III 
 Inf Tank Mk IVChurchill 4 - IV 
 Ram Mk II 
 Inf Tank Mk IVChurchill 3 - III 
 Cruiser Mk VIIICromwell I/II/III 
 

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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