Ammunition
The M1 utilized fixed ammunition. Projectiles were fitted with a 37×223mmSR cartridge case.
| Available ammunition | |||||
| Type | Model | Weight (round/projectile) | Filler | Muzzle velocity | Range horizontal/vertical |
| APC-T | APC-T M59A1 Shot | 1.44/0.87 kg (3.17/1.91 lbs) |
- | 625 m/s (2,050 ft/s) |
5,290/3,660 m (17,355/12,007 ft) |
| HE-T | HE-T SD M54 Shell | 1.21/0.61 kg (2.66/1.34 lbs) |
792 m/s (2,598 ft/s) |
8,275/5,760 m (27,149/18,897 ft) |
|
| Armor penetration table | ||||
| Ammunition / Distance | 457 m (499 yds) |
914 m (999 yds) |
1,371 m (1,499 yds) |
1,828 m (1,999 yds) |
| APC-T M59A1 Shot (homogeneous armor, meet angle 30°) | 23 mm (.90 in) |
18 mm (.70 in) |
15 mm (.59 in) |
13 mm (.51 in) |
| APC-T M59A1 Shot (face-hardened armor, meet angle 30°) | 25 mm (.98 in) |
18 mm (.70 in) |
15 mm (.59 in) |
13 mm (.51 in) |
| Different methods of armor penetration measurement were used in different countries / periods. Therefore, direct comparison is often impossible. | ||||
Read more about this topic: 37mm Gun M1