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Rifles, Reloading, Optics, Equipment
Reloading
chronograph & load development?
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<blockquote data-quote="rg1" data-source="post: 292239" data-attributes="member: 11927"><p>Plus 1 on what has already been posted about needing to know the velocity for long range shooting to develop drop tables. One thing a chrono will do is make you shake your head when comparing data in reload manuals to what you are getting in your firearms. It will show that a lot of data in manuals (not all) are 100-200-300 feet per second slower than what the manual says they achieved with a certain load. You can get better info as to which primer brand gives the most consistent velocity. I've seen in some testing that when getting near maximum velocity the velocity increase with powder increments drops off. For instance if every .5 grains of powder increase gives approx. 75 fps more velocity and when getting near maximum the increase may drop down to 30 or so. I've seen this often but not in every case. I loaded for years without one and simply thought that my favorite load according to the book was going 2900fps and found out that actually it was only 2750. Just another gadget for loading and shooting but a useful one.</p></blockquote><p></p>
[QUOTE="rg1, post: 292239, member: 11927"] Plus 1 on what has already been posted about needing to know the velocity for long range shooting to develop drop tables. One thing a chrono will do is make you shake your head when comparing data in reload manuals to what you are getting in your firearms. It will show that a lot of data in manuals (not all) are 100-200-300 feet per second slower than what the manual says they achieved with a certain load. You can get better info as to which primer brand gives the most consistent velocity. I've seen in some testing that when getting near maximum velocity the velocity increase with powder increments drops off. For instance if every .5 grains of powder increase gives approx. 75 fps more velocity and when getting near maximum the increase may drop down to 30 or so. I've seen this often but not in every case. I loaded for years without one and simply thought that my favorite load according to the book was going 2900fps and found out that actually it was only 2750. Just another gadget for loading and shooting but a useful one. [/QUOTE]
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Reloading
chronograph & load development?
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