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Rifles, Reloading, Optics, Equipment
Reloading
300 wm load development
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<blockquote data-quote="gspman" data-source="post: 653705" data-attributes="member: 26636"><p>I am a little miffed at my measured velocity differences during my load development phase.</p><p>I have sorted all my cases (R-P brass),I have 24 3x reloaded brass. All weight within a half gn of each other.</p><p>I have sorted my accubonds so they are all the same weight exactly.</p><p>Tumbled, then ultrasonic cleaned prior to loading.</p><p>All brass sized to exactly the same dimensions. with the exception a some slight variance in case neck length.+/- .001.</p><p>This batch of cases was annealed prior to this loading.</p><p>I have each charge measured exactly.</p><p>Used rcbs charge master for all weight measurements and powder throwing.</p><p>Primer pockets all uniformed. </p><p>I got my best group with 74gn H4831sc measure at 2960, 3011, 2932.</p><p>3 in the x, perfect clover leaf (.4x in.)</p><p>How can i get this group with the variation in measured velocity, what can i change in my procedure to tighten this up some. bullet seated .010 off the lands.</p><p>I am scratching my head here?</p></blockquote><p></p>
[QUOTE="gspman, post: 653705, member: 26636"] I am a little miffed at my measured velocity differences during my load development phase. I have sorted all my cases (R-P brass),I have 24 3x reloaded brass. All weight within a half gn of each other. I have sorted my accubonds so they are all the same weight exactly. Tumbled, then ultrasonic cleaned prior to loading. All brass sized to exactly the same dimensions. with the exception a some slight variance in case neck length.+/- .001. This batch of cases was annealed prior to this loading. I have each charge measured exactly. Used rcbs charge master for all weight measurements and powder throwing. Primer pockets all uniformed. I got my best group with 74gn H4831sc measure at 2960, 3011, 2932. 3 in the x, perfect clover leaf (.4x in.) How can i get this group with the variation in measured velocity, what can i change in my procedure to tighten this up some. bullet seated .010 off the lands. I am scratching my head here? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 wm load development
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