I read a report that in WW1 the ever recousefull tommies used to pull the bullets from their 303's and turn the bullets back to front to counter the german snipers. The report stated that german snipers used to operate behind steel loopholes and the tommies soon discovered that a bullet which was fired from reversing the bullets would hit the steel plates with such force it caused hot metal shards and spauling causing many wounds to the face and even permantly blinding some snipers.