The calibre itself does not intrigue me so much as the tech to make the case itself...I mean a 30call necked down to .277 is effectively a 7mm08 so they have made a 7mm08 capable of being sold in a imperial society and with a really strong case. That same tech applied to the calibres you mentioned including 308 or a magnum calibre really could be interesting....Especially if you have some sort of recoil fetish....
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