The .257 roberts ammo Diaries



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My judgment is an suitable KPS value for hunting deer and related Course two activity is KPS fifteen. I contact this the "baseline" KPS worth for deer cartridges and masses. I then calculated the down array Electrical power amount that every load must have to attain a baseline KPS value.

Upcoming, I designed a trajectory desk to the load utilizing the ShootersCalculator trajectory calculator. Through the trajectory desk, I recorded muzzle Vitality and energy at one hundred yards as well as other applicable distances.

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Down array, bullet velocity is not the sole, or primary, factor that establishes terminal efficiency. Velocity is important to the extent that it imparts kinetic .257 roberts ammo Vitality to a bullet of offered size and weight.

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I started out Along with the baseline KPS with the .thirty-30 Winchester, reasoning that a KPS that is definitely suitable for 1 deer cartridge/load must operate for a distinct cartridge/load mixture.

The 257 Roberts cartridge was introduced by Remington Arms during the 1930s, but the design has existed Because the twenties. The designer, Ned Roberts, an American hunter, and ballistician, paired the caliber with quite a few mother or father cartridges until he tuned the wildcat round good. He finally located it labored best that has a 7x57mm Mauser circumstance.

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