My understanding is that the term "manufacturing" means a lot more than your casual reloader assembling a cartridge from components. Manufacturing is meant as a person or facility that creates the projectile to be used in the cartridge... making a penetrator, wrapping it in lead and then jacketing it.
I've seen TC's in .30-30 that have used projectiles from old WWII .30-06 blacktip AP. Still isn't manufacturing according to most folks I've asked about it. Just assembly from existing components.
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