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The Range
Ammo & Reloading
16" 5.56 1:7 twist with 40 gr bullets
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<blockquote data-quote="StitchJones" data-source="post: 3469541" data-attributes="member: 45978"><p>Man, I don't bust out the chronograph until my load development is done (but I don't really load with a velocity goal in mind either). Even then I only look at the velocity to get a SD and to get a rough guess for my come ups until I can actually verify them.</p><p></p><p>I start with a ladder test to find my powder charge (usually move in .2 gn intervals) . Then make adjustments to seating depths and neck tension. I use three round groups during that process until I have a couple good combinations, then step to five round groups. </p><p></p><p>If I try a different bullet, brass manufacturer, or power. the process starts all over so I have a true apples to apples comparison.</p><p></p><p>To me, if you're seeing drift on a 300 yard target that's an indication of an issue with your load, rig or technique. Unless you're shooting in some serious wind.</p></blockquote><p></p>
[QUOTE="StitchJones, post: 3469541, member: 45978"] Man, I don't bust out the chronograph until my load development is done (but I don't really load with a velocity goal in mind either). Even then I only look at the velocity to get a SD and to get a rough guess for my come ups until I can actually verify them. I start with a ladder test to find my powder charge (usually move in .2 gn intervals) . Then make adjustments to seating depths and neck tension. I use three round groups during that process until I have a couple good combinations, then step to five round groups. If I try a different bullet, brass manufacturer, or power. the process starts all over so I have a true apples to apples comparison. To me, if you're seeing drift on a 300 yard target that's an indication of an issue with your load, rig or technique. Unless you're shooting in some serious wind. [/QUOTE]
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