Quick Answer
Bullet drop differences between 180gr and 200gr bullets in a 300 Win Mag are minimal at short ranges but can be significant at longer distances due to the heavier 200gr bullet having a slightly lower ballistic coefficient.
Bullet Drop and Ballistic Coefficient
When comparing 180gr and 200gr bullets, the primary difference lies in their ballistic coefficient. The ballistic coefficient is a measure of a bullet’s aerodynamics, with higher values indicating better performance in flight. In the 300 Win Mag, a 180gr bullet typically has a higher ballistic coefficient than a 200gr bullet. For instance, the 180gr Sierra MatchKing has a G7 BC of 0.625, while the 200gr Sierra MatchKing has a G7 BC of 0.592. This difference in ballistic coefficient can result in a more pronounced bullet drop at longer ranges.
Effect of Bullet Weight on Range and Drop
When shooting at an elk at 300 yards, the 180gr bullet will drop approximately 4.5 inches, while the 200gr bullet will drop around 5.2 inches. This difference is relatively small, but it can become more pronounced at longer ranges. For example, at 400 yards, the 180gr bullet will drop around 14.5 inches, while the 200gr bullet will drop around 17.5 inches. This increased drop can make it more challenging to hit the elk, especially if the shooter is not accounting for it.
Hunting Implications
When hunting elk with the 300 Win Mag, the choice between 180gr and 200gr bullets should be based on the specific hunting scenario. If the shot is expected to be relatively close, the 200gr bullet’s heavier weight may be beneficial for increased kinetic energy. However, if the shot is expected to be longer, the 180gr bullet’s higher ballistic coefficient may be more advantageous to minimize bullet drop. Ultimately, the choice between these two bullet weights should be made based on the specific hunting situation and the shooter’s preferences.
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