I have, mostly on hunting rifles used in low light conditions. Formal target range, daytime, aligned right angle to the suns path, black front generally the best. Some ranges will throw you, backstop east sun rising in your eyes the worst.

Adjusting the rear arpeture as light changes is a key. Open as much as possible closing smaller to sharp front focus while maintaining adequate light on the target. Matches  I adjust the rear every relay, sometimes every shot. Silhouette targets, no defined point of aim it's essential 

Boats