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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Scope failed tall target test....🤬
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<blockquote data-quote="Pro2A" data-source="post: 1928172" data-attributes="member: 17889"><p>No insinuations intended, but shooting technique......trigger control, cant, parallax, recoil management.....??? Don't see any comments regarding avoiding cant during shooting. Effect of cant deviation increases with increasing elevation.....and can vary with each shot. Cant will cause predominantly horizontal shift like a clock hand moving off of vertical 12 o'clock, with vertical component becoming larger until vertical equals horizontal as cant reaches 1:30...45degrees. Did you level scope with bubble level on turret cap or turret edges? Or, adjustable parallel bar between pic rail and bottom flat of scope? Both methods assume reticle is true with those scope features......usually OK, but could be defective. How accurate is your level? Carpenter grade level versus machinist grade level can show significant deviation. An optical bore collminator (reference Brownells P/N 593-000-052WB; Bushnell P/N 743333) will confirm reticle vertical with bore. Have you verified reticle is plumb with a plumb bob string? Shine a bright light through the objective lens with light projecting reticle out of ocular lens onto nearby white plain wall. Place vertical line on wall and compare reticle to plumb line. Or, view plumb line hanging in front of scope at scope minimum parallax distance. Is your ocular lens truly adjusted for reticle clarity? That is a base starting point that you'd be surprised how many people miss this adjustment.</p></blockquote><p></p>
[QUOTE="Pro2A, post: 1928172, member: 17889"] No insinuations intended, but shooting technique......trigger control, cant, parallax, recoil management.....??? Don't see any comments regarding avoiding cant during shooting. Effect of cant deviation increases with increasing elevation.....and can vary with each shot. Cant will cause predominantly horizontal shift like a clock hand moving off of vertical 12 o'clock, with vertical component becoming larger until vertical equals horizontal as cant reaches 1:30...45degrees. Did you level scope with bubble level on turret cap or turret edges? Or, adjustable parallel bar between pic rail and bottom flat of scope? Both methods assume reticle is true with those scope features......usually OK, but could be defective. How accurate is your level? Carpenter grade level versus machinist grade level can show significant deviation. An optical bore collminator (reference Brownells P/N 593-000-052WB; Bushnell P/N 743333) will confirm reticle vertical with bore. Have you verified reticle is plumb with a plumb bob string? Shine a bright light through the objective lens with light projecting reticle out of ocular lens onto nearby white plain wall. Place vertical line on wall and compare reticle to plumb line. Or, view plumb line hanging in front of scope at scope minimum parallax distance. Is your ocular lens truly adjusted for reticle clarity? That is a base starting point that you'd be surprised how many people miss this adjustment. [/QUOTE]
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Long Range Scopes and Other Optics
Scope failed tall target test....🤬
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