- Feb 9, 2013
This is not true for long range as there is a point where the heavier bullets exceed the velocity and energy of the lighter weight bullet in addition to having less wind drift.In other words, not only is a heavy copper bullet not needed, but it, is counter-productive by reducing bullet speed.
For example I run the 143 hammer at ~3,610fps in my 7 RUM or the 177 at ~3,170 and at 1,000 yards the 143 is at 1,650 fps with 870 ft/lb of energy
while the 177 is at 1,782 fps with 1,250 ft/lb of energy
But inside 600 yards the 143 is faster and flatter shooting although it gives up a little energy. If you are shooting inside 600 yards I would run the shock hammers because the lower BC doesn't matter very much and the terminal performance is much more dramatic. I set up my buddy's 300 RUM with the 181 shock hammer, his guide was impressed how fast it dropped the bull.