Hi Rob, I have about 5 different powders for 410 because I have been buying and selling reloading kits. By preferred powder is Winchester 296 which I’m running out of and is now very rare these days. I have H110, Litgun, Trail bos and SP3 which I like and have plenty of, and can be used for 2 1/2” and 3” cartridges. I shot skeet with a Remington 1100 410 skeet, all other forms of clays including high pheasant with an O/U 410 but because of the way things are at the moment it’s all on hold.
Regards Dave