Instruct: Classify a given review as either positive or negative.
Query: Hatcher's is For Every Shooting Buff

Here's a great resource of shooting trivia.... Col Hatcher gives clear technical and anecdotal backgrounds on everything from what happens when you fire a cartridge without confinement, what happens when a jar of primers ignite, do bullets tumble from the sky or continue to spin and remain stable? How heavy must helmets be made to give proper protection? How far out does a 30-06 need to travel to stabilize and thus penetrate deeply? How were ballistics measured prior to electronic developments? On and on it goes, page after page, answering the details you've thought and pondered on and offering interesting new things to consider.