"The Flowers of War" movie handgrenade question

In the film “The Flowers of War” 2011 (about the rape of Nanking) a Chinese sniper places several handgrenades (look like German type 24 to me) on a path of advancing Japanese soldiers and then shoots these handgrenades from a distance. Would this work in real life?

Yes, things like that work very well in Hollywood. In real life . . .

The sniper would have to hit an item which is 8mm in diameter and about 20mm long, estimating the correct position within the grenade and also have it in a right angle where the projectile will not ricochet (or even piece the grenade at all) in case the grenade body is made of cast iron/steel.
All in all the likelyness iss much against the sniper.