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Long Range Hunting & Shooting
Group size vs ES
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<blockquote data-quote="Greyfox" data-source="post: 1656085" data-attributes="member: 10291"><p>Given the whole basis of this discussion is a minimal test of three shots to determine velocity/ES. Whether custom or factory, my experience has been that it frequently takes 100-200 shots to stabilize a new barrel with velocity generally increasing, and ES tightening. Frequent and accurate chronographing with a statistically viable number of shots during this barrel break-in process is important, and, an unreliable chronograph, or even measuring drops at long range(500-1000+ yards) before the barrel is stabilized can often be a fruitless exercise for precision long range work, ultimately requiring rework. It's the price of entry. I find it's often neccessary to Use as much as 10-20% of the barrel life to have an "effective" rifle for the balance of its life. Efforts to squeeze the life out of a barrel can many times be a false economy. IMO.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1656085, member: 10291"] Given the whole basis of this discussion is a minimal test of three shots to determine velocity/ES. Whether custom or factory, my experience has been that it frequently takes 100-200 shots to stabilize a new barrel with velocity generally increasing, and ES tightening. Frequent and accurate chronographing with a statistically viable number of shots during this barrel break-in process is important, and, an unreliable chronograph, or even measuring drops at long range(500-1000+ yards) before the barrel is stabilized can often be a fruitless exercise for precision long range work, ultimately requiring rework. It’s the price of entry. I find it’s often neccessary to Use as much as 10-20% of the barrel life to have an “effective” rifle for the balance of its life. Efforts to squeeze the life out of a barrel can many times be a false economy. IMO. [/QUOTE]
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