I am starting to load for cast boolets in a Henry .357 Max, and I posted a question to their 'tech people' asking about using a cowboy expander in a standard carbide die set, to get a larger neck for my .358 cast? They didn't reply to my question, just sent me a new cowboy expander stem, marked ' damaged part replacement', free of charge. When I didn't hear back from they I ordered same from Midway USA. With my cheap digital caliper, the cowboy expander measures about .358/9, and the orginal about .001 less. May have to sell one? That's service!
hc18flyer