Quote:
Heavier bullets have more energy at longer ranges, but also tend to drop more.
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Gravity is the one constant regarding all bullets: they all fall at the same rate. ...... the old saw about heavier bullets having more drop is only sort of true: all else being equal, heavier bullets start slower, and so are affected by gravity for a longer period of time at a given distance ...... and in the days before very efficient bullets became available, this was very significant.
Now, with the very low drag bullets available (and longer/heavier bullets being more efficient than shorter/lighter bullets) ....... at longer ranges, the opposite can be said to true: heavier low drag bullets retain velocity so much better than lighter ones, they could be said to drop less (not really- they all still fall at the same rate ..... the heavy bullet will just retain it's velocity better, and be in flight less time.
And since the OP is looking to knock down heavy steel rams at 500 yards, what he needs is energy ...... as much weight travelling as fast as he can get it to fly accurately........ more is better. Of the choices, 280 with a heavy, low drag bullet.