Originally Posted by davemccarthy707
The 130 will hold the energy longer.
Wrong! All things being equal, a heavier bullet will ALWAYS retain more energy at greater distances than a lighter bullet travelling at the same velocity, and it will drop less because of this - simple physics...
Kinetic Energy = Mass of bullet x Velocity (Squared) / 2
therefore, as bullet mass increases, so does K.E.
A 130 gr. .277 cal bullet travelling 2800 ft/sec has 2262ft.lbs at the muzzle and 1295ft.lbs at 300 yds.
A 150 gr. 277 cal bullet travelling 2800 ft/sec has 2610 ft.lbs at the muzzle and 1686 ft. lbs at 300 yds.