At my range trip today I picked up some brass stamped S&B 9mm Br. C. It appears to be the same size as .380. Are they exactly the same specs as .380? Also they have red primer sealer on them, would these be factory or reloads?
S&B 9mm Br. C. means 9mm short (.380). Same, same.
Yes, they are factory. Good brass but very tight primer pockets which makes them a challenge to reload.