Selecting hunting bullets is something like ordering restaurant meals: do you want the heavy meal or “lite”? Heavy bullets have been trusted for hundreds of years for obvious reasons: dropping a bowling ball on your foot hurts a lot more than a golf ball!
Ah, but whack that golf ball with a 100-miles-per-hour club swing and you might change your mind. A basic rule of physics is that double weight doubles energy, but doubling velocity quadruples energy. This is what enables us to terminate 1,000-pound moose with bullets weighing less than a half-ounce! Knowing this does little, however, to clear up the confusion over various bullet weights offered in most cartridges.