Yes. In hot weather the over-ball grease thing can be a bit of a mess. Many will say that, as long as you shave a ring of lead off the ball when loading, the grease is not necessary to prevent crossfire between chambers, and there is much merit to that position. The main reason for using grease then becomes 'lubrication', the intent of which is to keep the fouling (combustion products) soft and prevent jamming the gun action. This can be accomplished with lubed felt wads between the ball and the powder. These wads are available commercially, although many just make their own to save a few cents. They are effective and a viable alternative to grease.