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Rifles, Reloading, Optics, Equipment
Reloading
Disappointing 308 MV.......and......which powder in Lapua factory 308?
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<blockquote data-quote="Brown Dog" data-source="post: 66306" data-attributes="member: 1622"><p>Derek,</p><p></p><p>Thanks, I've spent all afternoon mulling this over in the back of my mind, waiting for the flash of inspiration.</p><p></p><p>Just spent 1hr fudging every variable (given a fixed 2722fps mv rather than the fudged 2580 I've been using) tried messing with pressure, alt, scope height, ****** value, BC etc /ubbthreads/images/graemlins/crazy.gif in order to try to match field observations. No success, only 2580 mv puts me in the parish /ubbthreads/images/graemlins/mad.gif</p><p></p><p>Until, literally 10min ago, it occurred to me that the S&amp;B might not be giving me spot on 10mm clicks. What if they were, say, 9mm clicks?</p><p></p><p>I just input a formula that divides my 1cm click values by 0.9, and lo and behold, at an mv of 2722 I am firmly in the parish! 0.88 seems closer yet. </p><p></p><p>This will need a bit more investigation, but I think this may be EUREKA</p><p></p><p>PS I'll drop you an email regarding the ACI</p></blockquote><p></p>
[QUOTE="Brown Dog, post: 66306, member: 1622"] Derek, Thanks, I've spent all afternoon mulling this over in the back of my mind, waiting for the flash of inspiration. Just spent 1hr fudging every variable (given a fixed 2722fps mv rather than the fudged 2580 I've been using) tried messing with pressure, alt, scope height, ****** value, BC etc [img]/ubbthreads/images/graemlins/crazy.gif[/img] in order to try to match field observations. No success, only 2580 mv puts me in the parish [img]/ubbthreads/images/graemlins/mad.gif[/img] Until, literally 10min ago, it occurred to me that the S&B might not be giving me spot on 10mm clicks. What if they were, say, 9mm clicks? I just input a formula that divides my 1cm click values by 0.9, and lo and behold, at an mv of 2722 I am firmly in the parish! 0.88 seems closer yet. This will need a bit more investigation, but I think this may be EUREKA PS I'll drop you an email regarding the ACI [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Disappointing 308 MV.......and......which powder in Lapua factory 308?
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