Ammunition
Most of the shells used by the sIG 33 were unexceptional in design, but the Stielgranate 42 was different in fundamental ways from ordinary shells. The driving rod was loaded into the muzzle so that the finned projectile remained in front of, and outside, the barrel entirely. A special charge was loaded and would propel the projectile about a 1,000 metres (1,100 yd) downrange. At about 150 metres (160 yd) distance the driving rod would separate from the projectile. Unlike other Stielgranaten, this version was not intended for anti-tank use, but rather for the demolition of strongpoints and clearing barbed-wire obstacles and minefields by blast effect.
| Shell | Type | Weight | Filler |
| I Gr 33 | HE | 38 kilograms (84 lb) | 8.3 kilograms (18 lb) amatol |
| I Gr 38 Nb | Smoke | 40 kilograms (88 lb) | oleum/pumice |
| I Gr 39 Hl/A | Hollow-charge | 25.5 kilograms (56 lb) | cyclonite/TNT |
| Stielgranate 42 | demolition | 90 kilograms (200 lb) | 27 kilograms (60 lb) amatol |
Read more about this topic: 15 Cm SIG 33