7.5-cm Pak 411
It was a taper-bore gun went from 75 mm to 55 mm.1,2 It was based on the Gerlich principle.1,2 The rounds would have special flanges that would fold back as the shell went down the barrel.1 This would increase the shells velocity out the end of the barrel.1
It was an exceedingly popular gun, and almost took over from the 7.5-cm Pak 40, but due to tungsten shortages only 150 were built.1,2
The trail legs attached directly to the shield which saved on manufacturing time.2 There was also an automatic hydraulic braking system that was operated by the towing vehicle.2 The barrel typically only lasted 400 rounds before having to be replaced.2
| 7.5-cm Pak 41 | |
|---|---|
| Starting Caliber | 2.95"1,2 75 mm1,2 |
| Emerging Caliber | 2.1"2, 2.16"1 55 mm1,2 |
| Length of gun | 14' 2"1,2 4.32 m1 |
| Length of bore | |
| Rifling | |
| Length of rifling | |
| Weight traveling | 2,989 lb2 1,356 kg2 |
| Weight in action | 3,064 lb1 1,390 kg1 |
| Elevation | -10° to + 18°1 0° to +16°2 |
| Traverse | 60°1,2 |
| Muzzle Velocity | AP: 3,690 '/sec2, 4,035'/sec1 AP: 1,124 m/sec2, 1,230 m/sec1 |
| Range of shell | |
| Shell weight | AP: 5.51 lb1, 5 lb 11.25 oz2 AP: 2.5 kg1, 2.59 kg2 |
| Armor penetration | 6.73 " @ 500 yards1 171 mm @ 455 m1 |
| Breech mechanism |
Sources:
- The Encyclopedia of Weapons of World War II, 1998, Chris Bishop
- Artillery of World War II, Chris Chant, 2001
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