Number 1581: Joe the Boob: Bullets, Booze and Blood
Blood. Lots of blood. Killings on nearly every page of this lurid 11-page story from Crime Must Pay the Penalty #1 (#33 on cover; 1948). Not only killings, but killings with bloody head shots. Even a couple of knifings. If you like your crime comics fast and violent this fits that description.
Page 7 has two head shots, including a panel of a crook still talking after being shot in the forehead. Crooks were tough in those days!
Jim Vadeboncoeur gives Ken Battefield credit for pencils, and hedges with a question mark on an artist named Wilcox for the inks.