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Understanding the Power Factor An NRA Shooting Sports Journal
WebThe standard deviation is a number that describes uniformity. The smaller the number, the more uniform velocity. A standard deviation of zero means every velocity was the same. A standard deviation of 29 fps means you expect two-thirds of the individual velocities to be within 28 fps of the average. Mathematicians and statisticians have talked ... WebNov 21, 2024 · Hold for 940 yards, or 94 percent of the actual distance, and shoot. More math is required for most distances: for example, if your rangefinder reads 862 yards and the angle 50 degrees (cosine 0.64), unless you're a math wizard you'll have to dig out the calculator. Multiply 862 yards by .64, and you get a shoot-to distance of 552 yards. borics vs meds
What Is The 9mm Pistol’s Effective Range in 2024? [Solved]
WebNov 7, 2024 · If you recalculate for the 9mm NATO loading, a 124-grain projectile at 1200 fps and 396 ft-lbs with a G1 coefficient of 0.145, the trajectory table changes thusly: The 200 ft-lb minimum is reached at around 230 yards. Of course, the highest BC’s for any caliber are found in heavy-for-caliber projectiles, which for 9mm is the 147-gr loadings. WebJun 1, 2024 · 9mm Downrange Ballistics Trajectory Regardless of its bullet weight, the 9mm provides just the kind of flat trajectory that is most conducive to accurate shooting. Bullet drop tends to range from 10 to 12” at 100 yards. That’s likely more distance than you’ll need for self-defense. WebMay 17, 2024 · The Power Factor of that load would be 200 X 850 = 170,000. The last three numbers are dropped for simplicity, and the power factor is 170. Another example: A 9mm … borics tecumseh