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flechero wrote:The Sharpie mark is to ID your brass vs range brass or other reloaders.

My exact thoughts, too.

deplorable wrote:A serious reloader wouldn't leave their brass behind. For heaven's sake, it's hard enough leaving strangers' range brass behind.

Funny thing - I actually responded to a shooting at a club in Cape Town around 1990; youngster had been shot in the armpit (driveby) but the brass was all .45acp and had a sharpie stripe across the case-head like we reloaders do. Cops weren't interested in my brilliance, tho...

Ask him "Oh, reloading... so I guess you use more powder when you use a heavier bullet, huh?"

Heavier bullets use less powder (of the same kind) - non-reloaders always assume heavier bullet, more powder.

or something like "Which brand of primers do you prefer, Lee or Hornady?" (ammunition-related but they don't manufacture primers for sale).