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Britain
Bishop 25 pdr (Bishop) |
| The Bishop 25 pdr was designed in 1941, manufactured by Birmingham Railway Carriage and Wagon Company based on the existing fully tracked Valentine II and was in use from 1942 to 1945. |
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| | Specifications | | Operational Date(s) | 1942 - 1945 | | Quantity Produced | 149 | | Weight | 17.5 tonne | | Crew | 4 | | M.G's small | 1 | | M.G's large(>10mm) | n/a | | Length | 5.57 mtr | | Width | 2.66 mtr | | Height | 2.80 mtr | | Engine Details/Performance | | Max Road Speed | 15 mph | | Max Cross Country Speed | 8 mph | | Range Road | 90 miles | | Range Cross Country | 36 miles | | Fuel Type | Diesel | | Fuel Capacity | unknown | | Horse Power | 131 hp | | Power/Weight | 7 hp/tonne | | | General Information | The Bishop 25 pdr was designed in 1941, manufactured by Birmingham Railway Carriage and Wagon Company based on the existing fully tracked Valentine II and was in use from 1942 to 1945.
The vehicle was powered by Associated Equipment Company(AEC) 'AEC A190' diesel powerplant producing 131 HP which could drive the vehicle on roads at up to 15 mph with a range of about 90 miles before refuelling. Its cross country performance was adequate providing a max speed of about 8 mph and a range of about 36 miles.
It was armed with 1 light machine gun , a Bren Gun. Its main armament consisted of an Ordnance Q.F. 25pdr Mk 2 which could penetrate 142 mm of flat plate at 100 metres
This was a Valentine II hull fitted with a fixed armoured box with large rear doors.
An Ordnance Q.F. 25pdr Mk 2 gun was mounted in the armoured box, but due to the shape of the box it could only fire to a maximum of about 6000 mtrs. | |
| | Turret | | Front | | 51mm | @ | 0° | (51mm) | | Side | | 15mm | @ | 0° | (15mm) | | Rear | | 15mm | @ | 0° | (15mm) | | Top | | 10mm | @ | 90° | (10mm) |
| | Superstructure | | Front | | 30mm | @ | 68° | (80mm) | | Side | | 60mm | @ | 0° | (60mm) | | Rear | | 60mm | @ | 0° | (60mm) | | Top | | 10mm | @ | 90° | (10mm) |
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| Hull | | Front | | 60mm | @ | 21° | (64mm) | | Side | | 60mm | @ | 0° | (60mm) | | Rear | | 60mm | @ | 0° | (60mm) | | Top | | 10mm | @ | 90° | (10mm) |
| | Armour (x)mm @ (y)° (Effective mm @ 0°) | | Effective Armour - Maximum 80 mm - Minimum 10 mm |
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| Weapon Details |
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Bren Gun
(Machine Gun) |
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| | History | |
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| | The Bren gun was licenced from the Czechoslovak ZB vz.27 light machine gun which was designed and manufactured in Brno from 1935.
It fired the standard British .303 rifle round. |
| | Manufactured | 1930 - 2004 |
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| | Calibre | 7.70mm |
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| | Length | L/82 |
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| | Rate of Fire | 500 rpm |
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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Standard british .303 round - HPBT
(BALL Standard Small Arms)
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7.70mm 0.01Kg 761M/Sec | |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.17 |
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| Penetration(mm@30°) |
1 |
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| Penetration(mm@0°) |
2 |
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| Hit Probability(%) |
98 |
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Standard british .303 round
(BALL Standard Small Arms)
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7.70mm 0.017Kg 783M/Sec | |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.15 |
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| Penetration(mm@30°) |
4 |
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| Penetration(mm@0°) |
5 |
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| Hit Probability(%) |
98 |
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| Weapon Details |
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Ordnance Q.F. 25pdr Mk 2
(Field Gun) |
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| | Manufactured | 1940 - 2018 |
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| | Calibre | 87mm |
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| | Length | L/27 |
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| | Rate of Fire | 8 rpm |
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| | Number of Rounds | 32
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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25pdr AP
(AP Armor Piercing)
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87mm 11.3Kg 518M/Sec | |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.2 |
0.4 |
0.81 |
1.7 |
2.69 |
3.79 |
5.01 |
6.4 |
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| Penetration(mm@30°) |
122 |
115 |
106 |
95 |
84 |
75 |
65 |
57 |
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| Penetration(mm@0°) |
142 |
133 |
123 |
110 |
98 |
87 |
76 |
66 |
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| Hit Probability(%) |
98 |
98 |
98 |
81 |
41 |
22 |
6 |
3 |
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25pdr Supercharge
(AP Armor Piercing)
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87mm 11.3Kg 564M/Sec | |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.18 |
0.36 |
0.74 |
1.56 |
2.47 |
3.48 |
4.6 |
5.88 |
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| Penetration(mm@30°) |
133 |
125 |
116 |
103 |
92 |
81 |
71 |
62 |
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| Penetration(mm@0°) |
154 |
145 |
134 |
120 |
107 |
94 |
83 |
72 |
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| Hit Probability(%) |
98 |
98 |
98 |
85 |
48 |
25 |
8 |
3 |
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25pdr HE
(HE High Explosive)
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87mm 11.5Kg 532M/Sec | 0.793Kg explosive |
| Maximum Range 8000 Mtr |
| Range(Mtr) | 1000 | 2000 | 3000 | 4000 | 5000 | 6000 | 7000 | 8000 |
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| Flight Time(Secs) |
2.12 |
4.87 |
8.58 |
13.84 |
21.9 |
35.81 |
65.5 |
173.58 |
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| Direct Fire |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.19 |
0.38 |
0.79 |
1.65 |
2.61 |
3.68 |
4.87 |
6.21 |
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| Hit Probability(%) |
98 |
98 |
98 |
81 |
41 |
22 |
8 |
3 |
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| Blast/Fragmentation Effects |
| Burst radius Infantry in open 99% kill | 2 mtr |
Burst radius Infantry in open 66% kill | 5 mtr |
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| Burst radius Infantry in open 33% kill | 13 mtr |
Armour Penetration inc roof at 1 mtr | 2 mm |
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| An explosion within 2 mtr of infantry in the open will cause 99% casualties - lethal. |
| An explosion within 5 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. |
| An explosion within 13 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 penetrate 2 mm of the tank armour including the roof. |
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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.
 
© WWIITanks 1980-2024
If you have any information, or comments on our site,
please E-Mail Simon at
wwiitanks@villagenet.co.uk
Page Last Updated: 2021-09-20 06:38:06
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![photo of Bren Gun from Bren gun photo from Wikipedia](javascript:launch("https://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Bren_wog.jpg/300px-Bren_wog.jpg"))
![photo of Ordnance Q.F. 25pdr Mk 2 from 25pdr from Wikipedia](javascript:launch("https://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/25_Pounder_Gun.JPG/1024px-25_Pounder_Gun.JPG"))
