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Posted: 8/23/2026 6:36:22 PM EDT
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Just sorted through a bunch of 300 BO range brass. I noticed CBC headstamps as; CBC 300 BO AND CBC 300 BO SUB I did a case fill test with 1680 only to find out that the two cases have the exact volume....to the tenth of a grain. Is there a difference between these cases that I'm not detecting? |
Global Warming Hoax Skeptic before it was cool
Joined:
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WA, USA
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Originally Posted By GarrettJ: Sounds like the brass is the same, and marked to be able to tell the difference between factory loads. Which is no concern to a reloader. |
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Shooting and Reloading, one hobby feeds the other.
Shooting and Reloading, one hobby feeds the other.
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