Dave, they range from 36.5 to 38 grains. Each load is for a specific size of buckshot.The 38 grain load is only to be used with 34 pellets of #4 buck, the 37 grain load is only for 34 pellets of #3 buck, ect. The 38 grain load is 1325 fps. A 38 grain load of PB with 9 pellets of #000 buck is 1405 fps. All the short 10 loads are roll crimps.
J.B., have you ever looked at the Gun Digest Book, "Reloading for Shotguns"? I have the 5th edition and it has a half dozen field loads for the 2 7/8" 10 gauge that use Herco, Unique, IMR 800X, and Universal. Not many loads, but one with 1 1/4 oz. of shot and 36 grains of Herco is 7050 psi. Looks like a useful load in the old girls. There is also a half dozen buckshot loads using the same powders in the 2 7/8" as well. At least the components for these would still be available.
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