Quote Originally Posted by Tack Driver View Post
Bolt over ride is a failure to feed. Brass over bolt is a failure to eject.

Specifically, bolt over ride is when the bolt slams home without stripping a round our of the mag. This is the typical malfunction induced when people don't get mags seated.
I get the verbiage, but I've heard several pro guys refer to brass stuck between the CH and bolt as bolt over ride and call a forward bolt with no stripped round a simple misfeed.

Which, to me, is a lot easier to classify.