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Rifles, Reloading, Optics, Equipment
Reloading
Hybrid 100v and the 280 Ackley Imp?
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<blockquote data-quote="cowboy" data-source="post: 505550" data-attributes="member: 8833"><p>All I'm saying is that you need to keep in mind that the chrony is measuring velocity 10' in front of the muzzle. Running that through a ballistic calc. gives me an adder of 14-15 fps at the muzzle.</p><p></p><p>If 10' from the muzzle is working for you - go with it. If you start seeing velocities, ES, and SD numbers not very uniform I have found on some calibers where 10' just isn't enough distance as the muzzle blast was doing some strange things with the velocities.</p><p></p><p>I pretty much set my chrony 15-20 ft in front of the muzzle and then I know I'm not getting any effects from muzzle blast. I go to a ballistic calc. and set that number up at the distance of my chrony and get my true muzzle vel.</p><p></p><p>Good Luck</p></blockquote><p></p>
[QUOTE="cowboy, post: 505550, member: 8833"] All I'm saying is that you need to keep in mind that the chrony is measuring velocity 10' in front of the muzzle. Running that through a ballistic calc. gives me an adder of 14-15 fps at the muzzle. If 10' from the muzzle is working for you - go with it. If you start seeing velocities, ES, and SD numbers not very uniform I have found on some calibers where 10' just isn't enough distance as the muzzle blast was doing some strange things with the velocities. I pretty much set my chrony 15-20 ft in front of the muzzle and then I know I'm not getting any effects from muzzle blast. I go to a ballistic calc. and set that number up at the distance of my chrony and get my true muzzle vel. Good Luck [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Hybrid 100v and the 280 Ackley Imp?
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