The problem I see is that your AI chamber likely will NOT match the AI dies that you buy nor will it likely match the headspace gauge unless a gunsmith had all three items in front of them at the time the chamber was cut. What this means is that even if the headspace is set to be four thou less than standard 7m08, ( which allows you to fire factory 7m08 ammo) the dies bought may still be different. Not to put you off at all but just proceed with caution and neck size only just enough to chamber on a firm bolt for the fire-form cases.
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