While not exactly 'bag molds' in the form most know, except one, they work good for my bore guns, 12-bore and up. But when dealing with these, you're not exactly casting more than a handful, so it's not an issue. For smaller guns, I prefer the Lee's because they heat up quick. If all I had was a bag mold without sprew plate for the smaller ones, I would never complain though, since I enjoy doing it. A lot of the smaller ones I have to use are special make, .500's etc., so they are slow, but that's just part of it. The shiny new ones popping out make it worthwhile. What else would I be doing with the time?