Neal Smith offers a set of Seven Years War rules for 15mm and 25mm figures called Fredericus Rex. Game Scales:
· 1 figure represents approx. 25-30 men. Each gun crewman represents one gun.
· One inch approximates 30 yds.
· One turn is equal to about 15 minutes of real time.
You have to join the Lace Wars Yahoo group to get it, though.