hello im new to this forum , i also reload .410s as they are getting to expensive in my oppinion 7pounds fo 25 catridges ,any i load my own was lucky to get a roll crimping tool off ebay for a good price,as these are heard to get a hold of ,fisrt off you need to make sure you dont over fill the catridge
you will need to weigh the shot that you put in the cartridge i use sometime 14gramms or sometimes a gramm or to less ,so as long as you dont put to much lead in all should be ok ,and make sure your gun is in good working order aswell before using any home loads NEVER ALTER THE POWDER CHARGE IN ANY SHOTGUN CARTRIDGE THINKING YOU WILL GET HIGHER VELOCITYS AS THE ONLY THING YOU WILL ACHIEVE IS YOUR FACE ALL MESSED OR WORSE (BEING DEAD)
ALL POWDER CHARGES ARE FOR SPECIFIC SHOT WIEGHTS