It details drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand. True .308 Winchester and .45-70 Government ballistics information can vary widely from the displayed information, and it is important to understand that the particular characteristics of a given round can make a substantive difference in its true performance. Since velocity affects the energy, a high-velocity bullet may have a stronger kick, influencing the next shot. Care must be taken when using this formula that consistent units are used. I looked up some of the commonly bought .308 Winchester rounds and made a table.
A 110 grain bullet fired from the same gun might only achieve 400 foot-pounds of muzzle energy, depending upon the manufacture of the cartridge. The difference between the Joule and Foot-pound force.
Mass, m, is usually given in grains and the speed, v, in feet per second but kinetic energy, Ek, is typically given in foot-pound force (abbrevi…
As such, the following is for comparative information purposes only and should not be used to make precise predictions of the trajectory, performance, or true ballistics of any particular .308 Winchester or .45-70 Government rounds for hunting, target shooting, plinking, or any other usage. Mc Graw-Hill encyclopedia of Science and Technology, volume ebe-eye and ice-lev, 9th Edition, Mc Graw-Hill, 2002. However, many times a projectile's construction and projectile's sectional density is not known or well understood. His tests recorded an average of 22 fps loss in muzzle velocity when he cut 1-inch of the barrel. Here are the two formulas for a calculation of, or more correctly the measurement of muzzle energy. Chamberlin FT, Gun Shot Wounds, in Handbook for Shooters and Reloaders, Vol. .308 Winchester (7.62mm NATO), This particular numerical coefficient is based in the local acceleration of gravity rather than the standard acceleration of gravity.
If your .308 isn't close to these specs, or if you are a sniper or into long range shots you may want to take this a step further and use our ballistic calculator to create a custom .308 ballistic chart to take into account variances. Furthermore there is the number 2 as the first numerical coefficient with in the denominator. Care must be taken when using this formula that consistent units are used. This will also emphasize that muzzle energy and its associated energies are a product of the gravitational pull of Earth. Decide what you need the gun for. In doing so, this gives the pound, foot, second and pound force its correct value. The 180 grain Federal soft point is best suited to game weighing between 90 and 320kg (200-700lb) with ordinary chest shots. The Joule is a product of mass and velocity in SI units of measure.
American Eagle (Federal) Full Metal Jacket Boat-Tail, 150gr. The .308 Winchester has slightly more drop at long range than the .30-06 Springfield, owing to its slightly lower (around 30 metres per second (100 ft/s)) muzzle velocity with most bullet weights. [21], F-class is a variant of fullbore target rifle which permits optical telescopic sights and shooting rests at the front and rear, such as a bipod or bags. The .308 Winchester is one of the most popular hunting cartridges in the United States, and possibly the world. When loaded with a bullet that expands, tumbles, or fragments in tissue, this cartridge is capable of high terminal performance.[7][8][9]. For these reasons (which are infinite) no firearm or ammunition manufacturer will specify a particular bullet or bullet/cartridge combinations ability to work on a particular target. The US Military based its experiments on the .300 Savage to come up with the T65 series.
By 500 yards though, the ballistically superior 6.5mm bullets help narrow that gap down to 108 foot pounds with the E-Tip and just 38 foot pounds of energy with the ELD-X. Again, we always assume the pound, foot and second are there because we know the bullet weight (grains) and velocity (feet per second). In American engineering units: 1. The heavier the bullet and the faster it moves, the higher its muzzle energy and the more damage it will do.
Does Barrel Length Affect Muzzle Velocity? Offered by many companies as either a single shot or a fast handling lever, Comments have to be approved before showing up, © 2020 Foundry Outdoors - All Rights Reserved, Product successfully added to your Shopping Cart, 223 WSSM Winchester Super Short Magnum Ammo, 243 WSSM Winchester Super Short Magnum Ammo, 25 WSSM Winchester Super Short Magnum Ammo, 300 RSAUM Remington Short Action Ultra Magnum Ammo, 7mm RSAUM Remington Short Action Ultra Magnum Ammo, .308 Winchester vs .45-70 Government Ammo Comparison - Ballistics Info & Chart. 2. Muzzle energy is the energy of a bullet right when it leaves the firearms barrel.
pressure to certify for sale to consumers. Proponents of the hydrostatic shock theory contend that the .308 Winchester has sufficient energy to impart hydrostatic shock to living targets when rapidly expanding bullets deliver a high rate of energy transfer.
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