Quote:
Originally Posted by ExcitableBoy
The simple point is that if you are loading for the same velocity you will retain more terminal energy with a heavier bullet, thus more effective.
Of course, you have to be able to hit what you're aiming at. :roll eyes:
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If you are loading for the same velocity, you'll get more energy with a heavier bullet. That's obvious.
You'll also get more momentum with the heavier bullet and that tends to increase penetration as does the improved sectional density of the heavier bullet.
Even at slower velocity you'll potentially have more momentum with a heavier bullet and all thing being equal, you'll always have more sectional density.
However, at social shooting distances, you won't "retain" more energy. Longer bullets tend to have higher BCs, for example a 110 gr XTP has a BC of .131, a 125 gr XTP has a BC of .151 and a 158 gr XTP has a BC of .206. The heavier bullets do retain velocity better, but at the short ranges involved in a self defense shoot it makes no difference what so ever.