I have been reloading pistol and rifle cartridges for years and have just acquired a couple of old Mec reloaders so I can start loading shotgun shells, one is 12ga and the other will be set up for 2 1/2" .410 when my dies get here. What are the best powder and hulls to use and where do you get them? I will be loading a 1/2oz. of no. 8 or 9 shot in the .410 and probably 1 1/8 oz. of no. 6 or 8 shot in the 12. In some of my research people are recomending to stay away from 2 pc hulls, How do you know if they are 2 pc.??