I could not find much information about reloading 410, it seems there may not be a real big demand for this size shell. I just started reloading them because I was going broke buying new shells. I looked for many months and asked a lot of questions, I found that there are many ways to achieve the same results but once you find it, stick with what works. I bought a MEC Jr V and went from there, it has everything needed, slow but all you add are the ingredients. I reload Winchester Super X HS Silver Box, AA HS Black Box, 2 1/2 " Shells. I tried Claybuster Red Wads and found them to cause a short stack and wind up with extra room in the shell. I removed the inners from a Win Super X AA HS shell and found the Wad was twice the thickness at the base, so I loaded one of my shells with the Win Wad and shabang, it was perfect. I went on line and bought 500 Win WAA410 HS Red Wad 250/Pk each. They cost abought twice the price as the others but well worth using the real thing. So this is what I do, I load only Winchester HS, 2 1/2 for clays, 1/2 OZ - 7 1/2 lead, Win 409 primer, 15.0 Grains 296 Win Powder, Only Win WAA410HS Wads for AA-HS. The shells crimp up most of the time just right. Oh, I use a # 11 Bushing which gives me 14.8 to 14.9 Grains, I don't think it's neccessary to alter the bar. The 296 powder is what Winchester loads in the original shells according to information that the powder was made for their loading of 410's. The combination works because it's everything that Winchester recommends and It's on the back of the bag that contains the Wads. Don't you just love reloading? I wanted to share my experience with the jungle of 410, thank you.