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Britain
Antitank SP17pdr M10 (Achilles)
Ordnance classification - M10
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| The Antitank SP17pdr M10 was designed in 1942, manufactured by the British Army based on the existing fully tracked American M10 Tank Destroyer and was in use from 1944 to 1945. |
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| | Specifications | | Operational Date(s) | 1944 - 1945 | | Ordnance classification | M10 | | Quantity Produced | 1100 | | Weight | 29.6 tonne | | Crew | 5 | | M.G's small | 1 | | M.G's large(>10mm) | 1 | | Length | 6.03 mtr | | Width | 3.08 mtr | | Height | 2.49 mtr | | Engine Details/Performance | | Max Road Speed | 32 mph | | Max Cross Country Speed | 20 mph | | Range Road | 322 miles | | Range Cross Country | 186 miles | | Fuel Type | Diesel | | Fuel Capacity | 165 gal | | Horse Power | 375 hp | | Power/Weight | 12 hp/tonne | | | General Information | The Antitank SP17pdr M10 was designed in 1942, manufactured by the British Army based on the existing fully tracked American M10 Tank Destroyer and was in use from 1944 to 1945.
The vehicle was powered by General Motors 'General Motors 6046' diesel powerplant producing 375 HP which could drive the vehicle on roads at up to 32 mph with a range of about 322 miles before refuelling. Its cross country performance was good providing a max speed of about 20 mph and a range of about 186 miles.
It was armed with 1 light machine gun , a Bren Gun. and 1 large machine gun. consisting of 0.5 inch Browning Machine Gun M2 Its main armament consisted of an Ordnance Q.F. 17pdr which could penetrate 201 mm of flat plate at 100 metres .
The Achilles was a British modification to the American M10 Tank Destroyer utilising the 17pdr gun instead of the American 3" (76.2 mm) Gun M7, which improved the anti-tank capability significantly.
The original turret was open topped making it vulnerable to high explosives and grenades, and was manually rotated, so was slow to change directions. The Achilles had a modified roof of 20mm armour reducing the vulnerability of the M10. | |
| | Turret | | Front | | 57mm | @ | 45° | (81mm) | | Side | | 25mm | @ | 75° | (97mm) | | Rear | | 25mm | @ | 0° | (25mm) | | Top | | 19mm | @ | 90° | (19mm) |
| | Superstructure | | Front | | 38mm | @ | 35° | (46mm) | | Side | | 19mm | @ | 52° | (31mm) | | Rear | | 19mm | @ | 52° | (31mm) | | Top | | 19mm | @ | 90° | (19mm) |
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| Hull | | Front | | 51mm | @ | 34° | (62mm) | | Side | | 25mm | @ | 0° | (25mm) | | Rear | | 25mm | @ | 0° | (25mm) | | Top | | 20mm | @ | 90° | (20mm) |
| | Armour (x)mm @ (y)° (Effective mm @ 0°) | | Effective Armour - Maximum 97 mm - Minimum 20 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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0.5 inch Browning Machine Gun M2
(Machine Gun) |
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| | Calibre | 12.70mm |
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| | Rate of Fire | 480 rpm |
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| | Number of Rounds | 420
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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MG
(AP Standard Small Arms)
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12.70mm 0.04Kg 884M/Sec | |
| Quoted Penetration 29mm @ 100mtr/0° |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.13 |
0.28 |
0.67 |
2.46 |
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| Penetration(mm@30°) |
19 |
15 |
12 |
5 |
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| Penetration(mm@0°) |
22 |
18 |
14 |
6 |
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| Hit Probability(%) |
98 |
98 |
98 |
48 |
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| Weapon Details |
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Ordnance Q.F. 17pdr
(Anti Tank Gun) |
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| | Manufactured | 1942 - unknown |
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| | Calibre | 76.20mm |
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| | Length | L/55 |
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| | Number of Rounds | 50
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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17pdr MkI - MkIII
(AP Armor Piercing)
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76.20mm 7.65Kg 950M/Sec | |
| Quoted Penetration 130mm@915m |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.11 |
0.22 |
0.44 |
0.94 |
1.5 |
2.13 |
2.85 |
3.69 |
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| Penetration(mm@30°) |
174 |
161 |
147 |
129 |
113 |
97 |
84 |
71 |
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| Penetration(mm@0°) |
201 |
186 |
170 |
150 |
131 |
113 |
97 |
82 |
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| Hit Probability(%) |
98 |
98 |
98 |
98 |
88 |
60 |
34 |
22 |
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17pdr HE/Red
(HE High Explosive)
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76.20mm 6.1Kg 550M/Sec | 0.480Kg explosive |
| Maximum Range not shown as gun elevation is limited |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.18 |
0.37 |
0.77 |
1.63 |
2.59 |
3.68 |
4.93 |
6.37 |
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| Direct Fire |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.18 |
0.37 |
0.77 |
1.63 |
2.59 |
3.68 |
4.93 |
6.37 |
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| Hit Probability(%) |
98 |
98 |
98 |
81 |
44 |
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 | 1 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 1 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
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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"))
