On the mancast I heard what you said about Hornady lot to lot variations. I am wondering what or how this is that could be that dramatic? 4 components and a few steps. I have to imagine they do quality control checks and lot sampling and gauge R&R and incoming inspections on components all the time. If powder weight is drifting that much or bullet weight out of
spec or brass volume changing - they should know and reject the component or the lot? They go to so much R&D expense to design and build a product like a 7mm PRC and have so much marketing and reputation at stake - how can the velocity move so much?
Good question. I don’t totally know what changes it every time, but as an example, I had two boxes of identical Hornady ammo last week that had two totally different primers. One box had silver primers, the other gold.
Identical lot #'s?
Different lots.
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They probably have sourcing issues as we do in electronics. We qualify backup parts so the sourcing team has options to keep production going. But we have to test any parts before they make it to the approved list and meet the same performance requirements regardless of which source they use. I have to think the ammo makers must to the same thing particularly for safety and liability concerns as well as product consistency.