Most shotgun powders make really good handgun powders. I know you already found the ammo you want, but for anyone reading, these are not hard to make. There's not a ton of true 2 ounce load data out there, but there's plenty of 1 7/8 oz in a 3". I mostly hunt with blackpowder now, but one of my favorites for smokeless is a 1 7/8 oz load with bluedot powder, which also works phenominal in full power 9mm luger, 10mm auto, 357 magnum, 44 magnum, etc. It is even great in 45 acp if you like full power ammo (not 230gr at 830fps). Federal 3" hulls are a little pricy, but a single bag of 100 should do a turkey hunter well. Buy new hulls, roll crimp them, no press needed. You can even buy them pre-primed. Just use #7.5 shot instead of bigger shot, easy as that. In a week you could order and load more #7.5 turkey loads than you could locate old Federal loads in a lifetime.
