"The injury produced by a bullet depends on the rate at which the bullet is going at the moment of impact, but certain peculiarities as to the shape, density, and weight of the projectile must also be taken into account, together with the hardness and resistance of the part hit. ... The Snider bullet. This, from its weight and size, produced at moderate ranges (600 yards) very severe results. The rifle was used a good deal by the enemy [Pathans], and some of the most destructive bone lesions were the result of this bullet. The wounds of entrance and exit are comparatively large when compared with the Martini-Henry and Lee-Metford, but do not present the same bruising as that produced by the round bullet [of the jezail]. The effect on the bones is very severe, much comminution and extensive fissuring taking place. The wound of exit is often large and has fragments of bone, muscle, tendon, etc., blown out. At the longer ranges these effects are not noted. ... The Martini-Henry bullet. The effects of the Martini-Henry bullet are of the same character as the Snider, but the bullet is smaller and has much greater velocity. The wounds of entrance and exit are, therefore, smaller if the bullet passes clean through the limb. There is but little bruising of the skin at the wounds of entrance and exit. The fracturing and fissuring of bone are very severe, especially at the shorter ranges."
In any case, according to A. B. Wylde (who served in the Eastern Sudan), "it was very easy to recognise those Dervishes that were killed by the Snider from the ones killed by the Martini-Henry."