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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cronograph's ??
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<blockquote data-quote="Engineering101" data-source="post: 779953" data-attributes="member: 63138"><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">There are 3 chronos I would consider owning. Ohler 35, CED Millenium II and CE ProChrono Digital – the best value by far being the last one though the IR sky screens that are optional for the CED Millenium II are nice if you like to keep shooting as it is getting dark. I don't like anything hanging on the gun barrel as the added weight will shift point of impact and "tune" accuracy to make it better or worse.</span></span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">My best chrono trick - use a boresite laser to align it. Point your rifle at the target and insert a boresite laser. Put clear plastic targets in each sky screen that are marked with a grid. When the laser hits the grid in both screens in the same place it is aligned. Do this and it will be aligned in both the pitch and yaw axis and will read as accurate as it can. Don't do this and it usually will be misaligned which will cause it to read low in proportion to the misalignment. Also, measure the distance from muzzle to the center of the chrono. I always put mine at 4 yards. After shooting, correct velocities back to the muzzle using bullet BC and you ballistics program. </span></span></p></blockquote><p></p>
[QUOTE="Engineering101, post: 779953, member: 63138"] [FONT=Verdana][SIZE=2]There are 3 chronos I would consider owning. Ohler 35, CED Millenium II and CE ProChrono Digital – the best value by far being the last one though the IR sky screens that are optional for the CED Millenium II are nice if you like to keep shooting as it is getting dark. I don’t like anything hanging on the gun barrel as the added weight will shift point of impact and “tune” accuracy to make it better or worse.[/SIZE][/FONT] [FONT=Verdana][SIZE=2] [/SIZE][/FONT] [FONT=Verdana][SIZE=2]My best chrono trick - use a boresite laser to align it. Point your rifle at the target and insert a boresite laser. Put clear plastic targets in each sky screen that are marked with a grid. When the laser hits the grid in both screens in the same place it is aligned. Do this and it will be aligned in both the pitch and yaw axis and will read as accurate as it can. Don’t do this and it usually will be misaligned which will cause it to read low in proportion to the misalignment. Also, measure the distance from muzzle to the center of the chrono. I always put mine at 4 yards. After shooting, correct velocities back to the muzzle using bullet BC and you ballistics program. [/SIZE][/FONT] [SIZE=2][/SIZE] [/QUOTE]
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Cronograph's ??
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