FH 77 155 mm Field Howitzer System
| variant | FH-77A Swedish Army | FH-77B for export |
| Production [Jan 1997] | 203 | 508 |
| Crew | 10 | 6 |
| Muzzle Brake. Originally pepperpot, later a doublebaffle type was fitted to most pieces | Originally pepperpot, now doublebaffle | |
| Recoil System | Hydropneumatic | Hydropneumatic |
| Breech Mechanism | Vertical sliding block | Interrupted screw, stepped thread |
| Carriage Type | Split trail with auxiliary power unit | Split trail with auxiliary power unit |
| Shield | None | None |
| Ammunition | chambered for special Swedish pattern semi-fixed 155 millimeter ammunition in the following types: M/77B High Explosive/High Capacity, M/77 High Explosive, M54/77 High Explosive practice, Illuminating and Smoke | standard NATO pattern separate/bagged 155 millimeter ammunition plus Extended Range Full Bore/Base Bleed types and rocket assisted projectiles |
| Dimensions | specifications unique to Sweden. | NATO production standards |
| length, when firing | 11.6 meters (38.05 feet) | |
| Caliber | 155 millimeters 6.10 inches | 155 millimeters 6.10 inches |
| Length overall | 11.2 meters 36.75 feet | 11.6 meters 38.05 feet |
| Barrel length | 38 calibers/ 5.89 meters 38 calibers / 19.32 feet | 39 calibers/ 6.05 meters 39 calibers/ 19.83 feet |
| Traveling width | 2.64 meters 8.66 feet | 2.65 meters 8.69 feet |
| Firing width | 7.18 meters 23.56 feet | 7.21 meters 23.65 feet |
| Traveling height | 2.75 meters 9.02 feet | 2.81 meters 9.22 feet |
| Firing height | 2.75 meters 9.02 feet | 2.79 meters 9.15 feet |
| Traveling weight | 11.5 tonnes 12.68 tons | 11.99 tonnes 13.22 tons |
| Firing weight | 11.45 tonnes 12.62 tons | 11.98 tonnes 13.21 tons |
| Performance | maximum range is with non assisted M/77 projectile with Charge 6 | maximum ordnance range is with Extended Range Full Bore/Base Bleed projectile and Charge 9 |
| Elevation | +50° | +70° |
| Depression | -3° | -3° |
| Traverse | 30°left/30°right | 30°left/30°right |
| Maximum range | 22,000 meters 24,000 yards | 30,000 meters 32,800 yards |
| Maximum rate of fire | 6 rounds in 25 seconds | 6 rounds per minute |
| Sustained rate of fire | 2 rounds per minute | 2 rounds per minute |
| towed | 70 kilometers per hour (44 miles per hour) behind a Saab-Scania SBAT 111S 6x6 truck | 70 kilometers per hour (44 miles per hour) behind a Saab-Scania SBAT 111S 6x6 or similar class truck |
| Auxiliary Power Unit | Volvo supplies the B20 spark ignition engine which is rated 59.68 kilowatts (80 horsepower) |
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