Didn't have the notch, but I sometimes use the edge of the insert extractor and the edge of the shotgun extractor as my witness mark. I works as well as the notch, but it isn't as handy or fast.

Hunt with Class and Classics

Religion: A founder of The Church of Spray and Pray

Acquit v. t. To render a judgment in a murder case in San Francisco... EQUAL, adj. As bad as something else. Ambrose Bierce “The Devil's Dictionary”