That's not the adrenaline you are tasting Chuck. That taste is the result of a buildup of Lactic Acid in the muscle tissue. It's the reason Rutted up bucks 90% of the time taste horrible unless you seriously marinate or milk soak the meat.
Here is a good place to aim if you want to drop one in it's tracks. Like others have said, it will ruin a little meat but not really all THAT much. Especially with that big and slow slug.
