Sectional density penetration velocity

Ballistic science, specifically. Jim Kasper is the one who thinks in terms of equations, not me. This calculation, specifically:. In other words, you multiply the weight of the bullet times the square of the velocity, then take half of whatever number you get. And that gives you the Muzzle Energy, usually as on our site expressed in foot-pounds of energy.

Sectional Density – All Important And Almost Ignored

Sectional Density obsolete concept? - Shooters Forum

Your email:. Jan I remember watching an episode of Doomsday Preppers, the one where a guy almost destroys the hearing of another prepper by firing next to his head. Surely if I could find the strength to should an Howitzer and fire it in fully automatic mode if there were such a thing I would indeed be a one man army but that is simply unrealistic. Indeed a round fired from an AR15 might leave a smaller hole in a piece of paper at 10 yards versus a 12 Gauge slug but when you factor in energy, muzzle velocity, range and the capability to put multiple rounds downrange quickly versus a single load shotgun the is indeed one of the most lethal loads out there.

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Penetration Index & Energy

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Terminal ballistics is in many cases, the least considered aspect of ballistics when determining the kind of bullet to use for a specific purpose. Yet, it's an important process to understand if you want to achieve optimal results. Terminal ballistics is the study of how a projectile behaves when it hits its target and transfers its kinetic energy to the target. Also known as wound ballistics, terminal ballistics is important to hunters because it illustrates how a particular bullet will transfer its potential energy when it strikes the target.