I load alot of 410 ammo. I use a Mec 600 jr mark 5 410 3 inch. I have a Lyman's shotgun data book. And the BPI small gague load data books. Plus u can goto Hodgdon website. And find free load data. I load 3 inch mostly in 5 & 6 shot. I use win 296 and Alliant 410 powder. I squirrel all the time. Went into Walmart this week. Seen Remington long range express 410 ga 3 inch ammo. First 3 inch I have seen in a while. 23.00 plus tax a box. Only had 2 boxes. I can reload the hulls.