Ammunition
The gun fired separately loaded, cased charge ammunition. Two different charges - full and reduced - were used. Use of the full charge was prohibited with the muzzle brake removed, or with old high explosive ammunition, shrapnel and smoke rounds.
The explosion of the OF-420 shell, with the fuse set to the fragmentation action, resulted in damage to 90% of targets in the 6 to 14 meters area and to 50% of targets in a 20 to 42 meter area. When the fuse was set to high explosive action, the shell made a crater 1-1.5 m in diameter and 40–60 cm deep in an average soil.
The shrapnel shell contained more than 600 bullets and covered an area about 800 m long and 45–50 m wide.
Ammunition available | |||||
Type | Model | Weight, kg | HE weight, kg | Muzzle velocity, m/s | Range, m |
Armor piercing | |||||
APCBC | B-420 | 18.71 | 0.44 | 655 | 3,000 |
High explosive and fragmentation projectiles | |||||
HE-frag, long range, steel | OF-420 | 17.2 | 2.15 | 670 | 16,130 |
HE-frag | OF-420U | 17.4 | 2.01 | 670 | 16,130 |
HE | F-420U | 16.54 | 1.8 | 581 (reduced charge) | 14,150 |
HE, old | F-422L | 16.41 | 1.56 | 580 (reduced charge) | 11,220 |
HE, old | F-422K | 16.41 | 1.54 | 580 (reduced charge) | 11,220 |
HE, old | F-422M | 16.41 | 1.7 | 580 (reduced charge) | 11,220 |
Shrapnel projectiles | |||||
Shrapnel with 45 sec tube | Sh-422 | 16.54-17.25 | 0.44 | 579 (reduced charge) | 9,400 |
Shrapnel with T-6 tube | Sh-422T | 16.44 | 0.44 | 579 (reduced charge) | 10,700 |
Smoke projectiles | |||||
Smoke | D-422U | 16.73 | 0.32/1.76 | 580 (reduced charge) | 11,220 |
Incendiary projectiles | |||||
Incendiary, with T-6 / T-7 tube | Z-420 | 17.2 | 0.035/1.6 | 670 | 10,800 (15,000) |
Incendiary, with T-6 / T-7 tube | Z-420 | 16,37 | 0,035/1,6 | 680 | 10,180 (15,260) |
Chemical projectiles | |||||
Frag-chemical | OH-420 | 17.2 | 670 | 16,130 | |
Chemical | HS-420 | 16.9 | 670 | 16,130 | |
Chemical with "NOV" | HN-422 | 16.4 | 580 (reduced charge) | 11,220 | |
Chemical with "SOV" | HS-422 | 16.4 | 0.35/1.7 | 580 (reduced charge) | 11,220 |
Armor penetration table | ||
APCBC projectile B-420 | ||
Distance, m | Meet angle 60°, mm | Meet angle 90°, mm |
100 | 95 | 117 |
250 | 93 | 115 |
500 | 90 | 111 |
750 | 87 | 107 |
1,000 | 84 | 103 |
1,500 | 78 | 95 |
2,000 | 72 | 89 |
2,500 | 67 | 82 |
3,000 | 62 | 76 |
This data was obtained by Soviet methodics of armour penetration measurement (penetration probability 75%). It is not directly comparable with western data of similar type. |
Read more about this topic: 107 Mm Gun M1910/30