Swaged GG bullets

[Dan]

Having found it is not a myth I put some Google-fu to the topic and found that Buffalo Arms sells them. Looking at the pictures on the web site they do not appear to have been modified with grooves after swagging. Pretty bullets from all appearances.

I suspect at this point that as BobW said, there is some serious equipment at play for these things. Only way I can visualize the process is a two piece die that has substantial lockup mechanisms.

I've tried to find a web site for Baco without success, where do they hide out?