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Rifles, Reloading, Optics, Equipment
Reloading
Accuracy=seating depth or tenths of powder
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<blockquote data-quote="barefooter56" data-source="post: 1130109" data-attributes="member: 85389"><p>John,</p><p>Short answer is "both". MikeCR and SidecarFlip made very good suggestions and points as to why you start with seating depth testing first then powder charge. The trick is to do both in a set order in set increments so you don't miss the seating depth or velocity accuracy node(s). Keep a good reloading log book and only change ONE thing at a time then test! What I have found is that the seating depth accuracy node usually is found at only 1 certain distance on or off the lands. The velocity accuracy node usually repeats as you go up in powder charge. If you graphed it. It would resemble a sine wave as the group starts open or closed then opens or closes as the powder charge is worked up till it returns to the original (starting) group size. The target will tell you. Vertical dispersion will become flatter. SD (standard deviation) if you are chronographing will drop to single digits and the velocities will be very similar in speed. Once you find your accuracy nodes THEN step into the case weighing and so on. With lighter and heavier cartridge cases you will have to "tweak the powder charge up (light) or down (heavy) to stay on your velocity accuracy node. Same as you will have to do as you "chase the throat" and set the bullet out of the case neck to maintain your seating depth sweet spot. Get your basics down before stepping into the deep end of the reloading pool. And only go as deep as you want or to what makes you confident in your load weather you target shoot or hunt. Keep in mind however that once you get a load to a minute to half minute of angle. More accuracy can be found faster by working on reading conditions ( wind and mirage) and working on position and trigger control than by tweaking the load. </p><p>Hope this helps!</p></blockquote><p></p>
[QUOTE="barefooter56, post: 1130109, member: 85389"] John, Short answer is "both". MikeCR and SidecarFlip made very good suggestions and points as to why you start with seating depth testing first then powder charge. The trick is to do both in a set order in set increments so you don't miss the seating depth or velocity accuracy node(s). Keep a good reloading log book and only change ONE thing at a time then test! What I have found is that the seating depth accuracy node usually is found at only 1 certain distance on or off the lands. The velocity accuracy node usually repeats as you go up in powder charge. If you graphed it. It would resemble a sine wave as the group starts open or closed then opens or closes as the powder charge is worked up till it returns to the original (starting) group size. The target will tell you. Vertical dispersion will become flatter. SD (standard deviation) if you are chronographing will drop to single digits and the velocities will be very similar in speed. Once you find your accuracy nodes THEN step into the case weighing and so on. With lighter and heavier cartridge cases you will have to "tweak the powder charge up (light) or down (heavy) to stay on your velocity accuracy node. Same as you will have to do as you "chase the throat" and set the bullet out of the case neck to maintain your seating depth sweet spot. Get your basics down before stepping into the deep end of the reloading pool. And only go as deep as you want or to what makes you confident in your load weather you target shoot or hunt. Keep in mind however that once you get a load to a minute to half minute of angle. More accuracy can be found faster by working on reading conditions ( wind and mirage) and working on position and trigger control than by tweaking the load. Hope this helps! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Accuracy=seating depth or tenths of powder
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