"There is absolutely no way to predict if reducing the powder charge will result in more or in fact less accuracy.It may also have no noticeable effect.Changing bullets,powders,primers or seating depthall mayincrease or decrease accuracy,but there is no way to predict this without actual load testing. "

Which is why reloading is so much fun.

The best is when you think you have it figured out and the gun shoots great. You load a box of shells and 2 months later when its colder out and you re-site gun in for hunting and for whatever reason the gun just doesnt shoot the same. Gotta love it.