How to Assess the Performance of Bullets After a Hunt?

Measuring Velocity Loss

When assessing bullet performance, it’s essential to measure the velocity loss during flight. This can be done using a chronograph, which measures the speed of the bullet as it exits the barrel and again after a set distance. A 200-yard chronograph test can help identify bullets that have lost excessive velocity, potentially indicating a problem with the bullet’s design or the rifle’s accuracy.

Analyzing Expansion Ratio

Expansion ratio is critical for controlled expansion bullets, which are designed to expand upon impact to increase stopping power. To analyze expansion ratio, compare the diameter of the expanded bullet to its original diameter. A minimum expansion ratio of 1.5:1 is typically considered acceptable, with some bullets designed to expand up to 2:1 or more. Measuring expansion ratio can help identify bullets that are not expanding as intended, potentially leading to reduced stopping power.

Evaluating Penetration Depth

Penetration depth is another critical factor when assessing bullet performance. Controlled expansion bullets are designed to penetrate a certain depth before expanding, which can help prevent over-penetration and minimize collateral damage. To evaluate penetration depth, measure the distance the bullet penetrates a block of ballistic gel or water, using a calibrated ruler or depth gauge. A penetration depth of 12-18 inches is typically considered acceptable for most hunting applications.