I didn't start reloading until about 1970, so I don't have any info on those old Red Dot loads, but I do remember DuPont recommended 700-x for 28 gauge at one time, and it is a fast burning, double base powder also. I don't think you will find any such loads in current manuals. You should always use the latest data, and you can't always trust that! At one time I loaded some .38 Spl. loads with 110 grain bullets from data in Speer manual #9, and it called for 10 Grains of DuPont SR4756. These loads were really hot, and luckily for me, I only shot them from modern guns. The next version of that manual did not have any loads with 4756, and a DuPont data sheet didn't even show 10 grains with that bullet in .357 magnum.
