.321" Lead free bullets are rare, a known. 32 Winchester Special was used in lever action guns with tube magazines, also a known. So, why is what appears to be a cannelure ring so narrow AND so shallow? The handloader must micro-manage case length in order to set the case mouth in the exact spot for the crimp into that ring. If the handloader wants an exact over all length AND use the cannelure ring then case length becomes the thing to manage.
MAKER: The design is based on what was asked for by customers. It is easy to adjust if something else is needed, but no one else has had an issue or asked. Feel free to email paul@makerammo.com

I like the .321dia. 150 grain bullets. But did find one .308dia.175 grain bullet mixed in with the .321 150 grain i ordered.