Interesting. The Calico mag is a helix orientation where as this is a ring configuration. Are you thinking you will have it spiral like the Calico mag? I think that would be quite a challenge with the longer case length of these rounds. Are those .300 AAC? The increased case length would require a very steep traverse to rotation ratio.
Yeah it will have a stationary internal helix. The OD of the whole mag will be somewhere right around 3". This makes the climb of the helix pretty reasonable at ~2.5" climb/ 9.4" circumference.
That's .300 AAC alright. This is all experimental atm. There's a couple more guys in #FossCAD on the OFTC IRC network who are working on it. Really hoping this works out okay, if nothing else it will be good fun.
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