I load 3" 1 5/8 oz of 6 at 1300 FPS .
It is deffenitly worth it if you all ready have the shot ,wads ect for duck hunting.

The reason for the lower shot charges is that hevi shot and lead need to be loaded differently for safty and a heaveyer charge would not be able to be pushed fast enough.

My 1 5/8 oz load patterens tighter at 50 yds than any 2 oz lead load dose at 35 yds.

Last year I just about removed a turkeys head at 40 yds.