Explanation of the Lethality Chart
The lethality chart shows the extent of the optimal range for a particular bullet, muzzle velocity and game size. Bullets are certainly lethal on game animals beyond the ranges shown in the chart, but the impact energy is considered sub-optimal beyond those ranges.
The ranges shown in the lethality chart are calculated based on the bullets mass and retained velocity according to Matuna’s Optimal Game Weight (OGW) formula. The OGW formula is a useful guide for predicting reliable lethality of rifle bullets on game animals of various sizes. The OGW formula isn’t a perfect calculation, and as stated previously, game can be taken beyond the ranges shown in the lethality chart, but the impact energy will be considered sub-optimal.
Other Lethality Factors
Of course, there is more to bullet lethality than striking energy. Bullet construction/terminal performance plays an important role as well. On impact, the Berger VLD penetrates up to 2” to 3” before expanding and delivering the bullets energy into the animal’s vitals.
Don’t forget about shot placement, which is probably the most important factor of bullet lethality. The high BC of the Berger VLD Hunting bullets means they will shoot flatter and be less susceptible to environmental conditions like wind deflection than lower BC bullets. In other words, the match accuracy and high BC makes the VLD more lethal thru a superior trajectory, and increased striking energy. Regardless of bullet construction, a well placed shot with high striking energy is the key to instant incapacitation and lethality.
The following table is an energy based lethality comparison for several .30 caliber bullets in the 168 grain class.