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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Figuring Muzzle velocity
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<blockquote data-quote="jwp475" data-source="post: 261072" data-attributes="member: 3776"><p>Yes it will correct the data, by adjusting the velocity. When I first chrongraphed my 338 Lapua with the 300 SMK I got a velocity of 2820 FPS. I found that I was quite low at 973 yards. The trajectory corrected the velocity and my drops were correct. But I didn't want to go that route at first so I adjusted the BC to .830 and that did not correct enough. I then decided to check my zero and I re-chronographed my load and this time I got a velocity of 2791 FPS average. Useing 2791 FPS my drops were and stil are right on. The trajectory validation had predicted 2790 FPS. I'll go that route from now on. Proper inof imput means proper info out put IMHO</p></blockquote><p></p>
[QUOTE="jwp475, post: 261072, member: 3776"] Yes it will correct the data, by adjusting the velocity. When I first chrongraphed my 338 Lapua with the 300 SMK I got a velocity of 2820 FPS. I found that I was quite low at 973 yards. The trajectory corrected the velocity and my drops were correct. But I didn't want to go that route at first so I adjusted the BC to .830 and that did not correct enough. I then decided to check my zero and I re-chronographed my load and this time I got a velocity of 2791 FPS average. Useing 2791 FPS my drops were and stil are right on. The trajectory validation had predicted 2790 FPS. I'll go that route from now on. Proper inof imput means proper info out put IMHO [/QUOTE]
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Figuring Muzzle velocity
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