Charlie, my sealed box of Eley fours is marked 3 ounces of BB shot. If I were to load those with smokeless, I would start with 30 grains of Red Dot with a bunch of fillers under about 1 1/2 ounces of shot. I would like that load so much that I wouldn't go any farther. Red Dot is a very fast powder but will not create high pressures in a big bore under light shot loads. 1 1/2 ounces is a very light shot load in a four bore so Red Dot is not too fast. If a slower powder is used, like Unique, pressure will be too low to make a good sound or good cold weather performance. Let us know how you do.
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