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Rifles, Reloading, Optics, Equipment
Reloading
Retumbo or H50BMG in 32" 300 RUM?
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<blockquote data-quote="Lefty7mmstw" data-source="post: 854386" data-attributes="member: 48043"><p>That's precisely the reason we gave up my the chrono's my father built years ago; he was building chrono's before the optical ones were really available. They used two laminated foil plates and Dad built/ programmed the electronics to measure the time between plates and arrive at a speed. They were accurate and had great shot to shot consistancy due to the way he built the stand, but you couldn't see a downrange target through the foil plates so you shot for speed/uniformity then for group. The plates also had to be replaced every dozen shots or so so if you were doing a bunch of stuff you may have to be chrono'ing for a while if the range was busy.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 854386, member: 48043"] That's precisely the reason we gave up my the chrono's my father built years ago; he was building chrono's before the optical ones were really available. They used two laminated foil plates and Dad built/ programmed the electronics to measure the time between plates and arrive at a speed. They were accurate and had great shot to shot consistancy due to the way he built the stand, but you couldn't see a downrange target through the foil plates so you shot for speed/uniformity then for group. The plates also had to be replaced every dozen shots or so so if you were doing a bunch of stuff you may have to be chrono'ing for a while if the range was busy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Retumbo or H50BMG in 32" 300 RUM?
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