Nope,
Here is a chart. NOW you need to double check by actually weighing what the measure "throws", (about five times and take an average) as it has also been found that different makes of BP powder measures while all set on the same amount, may throw different amounts of powder. Also the size of the shot may throw off the weight, AND if you use steel shot for waterfowl, it's completely different as steel is much lighter...
Powder Measure used for Shot
50 grains = ¾ ounce
60 grains = ⅞ ounce
70 grains = 1 ounce
80 grains = 1⅛ ounce
90 grains = 1¼ ounce
100 grains = 1⅜ ounce
110 grains = 1½ ounce
120 grains = 1⅝ ounce
I think I got this ⬆ from
@Brokennock . Works well for me, but what I did was to pattern my trade guns and my carbine. When I got the shot pattern right, I simply used that. Later I got this chart and it showed I'm using 1½ ounces of shot, with an 80 grain load of 3Fg (since I put my measure on 110 to measure shot). I weighed the shot and it was so close to that figure that I found the chart to be accurate for me.
LD