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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Full Length or Neck Only; What's Best Resizing for Accuracy?
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<blockquote data-quote="richhymas" data-source="post: 1804054" data-attributes="member: 43504"><p>I am a "younger" hunter who recently started shooting benchrest with a bunch of old retired guys about 6 months ago. That has been a real eye opener. I am learning a lot about longer range shooting (600 yards) and what impacts great groups at that distance that can't be seen at 100 yards. </p><p></p><p>I have also learned that these guys have lots of time on their hands to tinker and play with their load. I bought a BR gun that from a guy used after shooting it and realizing that it is a real shooter. For that gun I frequently win best aggregate group, which is the sum of the diameters of four groups of 5 shots each. This seems like a fair way to judge accuracy of a rifle. Anything under 10" is competitive (averaging 2.5" per group with best groups in good conditions just under 2"). This is around 1/3 MOA at 600. Anyone that can consistently shoot 1/4 MOA average 5 shot groups At 600 yards would blow the competition out of the water. </p><p></p><p>on these forms people are usually siting their very best groups not averages. And usually 3 shots at 100 yards. </p><p></p><p>getting to my point, most of these techniques are controversial meaning some but not all guns shoot better when x y or z techniques are used, but they do eliminate variables so that when something isn't working you don't have to worry about case weight variability or neck tension or powder charge variability and you can focus on systematically solving the accuracy problem. </p><p></p><p>in the real world, my experience tells me that many good barrels aren't very fussy and bad barrels won't shoot no matter what you do to your loaded round. There are plenty of cases in the middle where tuning your load just right makes a so so barrel shoot well.</p></blockquote><p></p>
[QUOTE="richhymas, post: 1804054, member: 43504"] I am a “younger” hunter who recently started shooting benchrest with a bunch of old retired guys about 6 months ago. That has been a real eye opener. I am learning a lot about longer range shooting (600 yards) and what impacts great groups at that distance that can’t be seen at 100 yards. I have also learned that these guys have lots of time on their hands to tinker and play with their load. I bought a BR gun that from a guy used after shooting it and realizing that it is a real shooter. For that gun I frequently win best aggregate group, which is the sum of the diameters of four groups of 5 shots each. This seems like a fair way to judge accuracy of a rifle. Anything under 10” is competitive (averaging 2.5” per group with best groups in good conditions just under 2”). This is around 1/3 MOA at 600. Anyone that can consistently shoot 1/4 MOA average 5 shot groups At 600 yards would blow the competition out of the water. on these forms people are usually siting their very best groups not averages. And usually 3 shots at 100 yards. getting to my point, most of these techniques are controversial meaning some but not all guns shoot better when x y or z techniques are used, but they do eliminate variables so that when something isn’t working you don’t have to worry about case weight variability or neck tension or powder charge variability and you can focus on systematically solving the accuracy problem. in the real world, my experience tells me that many good barrels aren’t very fussy and bad barrels won’t shoot no matter what you do to your loaded round. There are plenty of cases in the middle where tuning your load just right makes a so so barrel shoot well. [/QUOTE]
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Full Length or Neck Only; What's Best Resizing for Accuracy?
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