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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Tuning for long range
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<blockquote data-quote="LongBomber" data-source="post: 2388099" data-attributes="member: 14435"><p>I have tested primer depth in one rifle using the 21st century hand seater with fed gold metal 210 primers. I ran from I would call the primer touching the base of the pocket to 6 thou of crush. The groups def opened up once I passed 3 thou of crush. The 300 y groups easily doubled in size. I only shot one ten shot group at each setting (.0015 steps) so not a definitive test by any means but it was enough for me not to pursue it further.</p><p>For me at least, I get the most consistent results from my 20 year old rcbs hand seater and feeling the touch point. </p><p> I think shoulder bump variance or case to chamber fit might be a better way to call it, changes the primer depth more than the primer seating function. If that is 100% on point then maybe tuning primer depth would become the next variable to control.</p></blockquote><p></p>
[QUOTE="LongBomber, post: 2388099, member: 14435"] I have tested primer depth in one rifle using the 21st century hand seater with fed gold metal 210 primers. I ran from I would call the primer touching the base of the pocket to 6 thou of crush. The groups def opened up once I passed 3 thou of crush. The 300 y groups easily doubled in size. I only shot one ten shot group at each setting (.0015 steps) so not a definitive test by any means but it was enough for me not to pursue it further. For me at least, I get the most consistent results from my 20 year old rcbs hand seater and feeling the touch point. I think shoulder bump variance or case to chamber fit might be a better way to call it, changes the primer depth more than the primer seating function. If that is 100% on point then maybe tuning primer depth would become the next variable to control. [/QUOTE]
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Tuning for long range
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