After a lot of work I made a swaging press thanks to this forum, I´ve been experimenting with slugs for my .30 and .40 condor airforce rifles. Corbin explains a two staged method for making big cavity hp slugs, so far it has not work for me. http://www.corbins.com/airgun.htm
I´m totally new on swaging, only have an old atlas 618 lathe an a sieg X2D minimill (no previous experience on machining), I ve made my dies from aluminum or soft iron, no way I can work with steel. They work, I´ve made a lot of slugs for my rifles and perform decently. Any one can offer a better explanation on how to make big cavity slugs? I ve even had some luck with fragmenting slugs (used a torx tip as a marker) but so far no luck with the other kind. Normal HP slugs are ok but would like to learn a little more