I need a new bullet puller. I have one that works like a hammer. A guy give me a bunch of mixed brass some is loaded with who knows what? I am afraid to shoot this ammo and my puller will not pull some of it. I beat until I thought this thing would fly apart and some of it never slipped at all. I am interested in one that works with a press but have never used one of these. Will one puller work for all calibers or do you have to buy one for each caliber or extra parts for each caliber?