Beagler,
I fire my reloads in 10" 14" 16" 21" and 24" contender barrels and a old Iver Johnson single barrel. It has probably been 20 years since I had the Model 42 Win out. The 16" Contender barrel sees the most use and I have pretty much retired the 14" and the 10" is retired for sure.
I use mostly the old Remington 3/4 oz plastic wads, Green Remington 3" hulls, and H110 powder. I do have and use some of the 1/2 oz wads in the newer compression formed Winchester cases. I also use the Rem wads in the Federal plastic hulls. I should try some Lil Gun as I have plenty of it but was using H110 long before Lil Gun came to the market. The market currently needs a better wad for the 3" hulls but I don't think the demad is there as I don't think a lot of folks reload the 410. I started with a Lee loader and switched to a Mec along the way. I'm always in the garbage cans at the range looking for 410 hulls as the 410's are fun little shooters.