| Weights and Dimensions. |
| Material | Alloy steel. |
| Weight (including breech mechanism) | 1,248 kg.—2,745 lbs. |
| Caliber | 155-mm.—6.1 inch. |
| Total length | 2,332-mm.—91.8 inch. |
| Length of bore | 2,177-mm.—85.7 inch. |
| Length of rifled portion of bore | 737-mm.—68.4 inch. |
| Rifling |
| Number of grooves | 48. |
| Width of grooves | 7.145-mm.—0.2813 inch. |
| Depth of grooves | 1-mm.—0.03937 inch. |
| Width of lands | 3-mm.—0.1181 inch. |
| Twist, right hand, uniform, one turn in 25.586 cal. | |
| Powder chamber: |
| Diameter | 158.75-mm.—6.25 inch. |
| Length | 339.85-mm.—13.38 inch. |
| Volume | 6,965.75 cu. in.—425 cu. in. |
| Obturation | Pad. |
| Firing mechanism | Percussion. |