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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How do you determine "at the lands" by your method?
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<blockquote data-quote="a.JR" data-source="post: 33705" data-attributes="member: 1391"><p>Len,Your right about the drift ,i will give away drift anytime for a gain in vertical dispersion(VD)..My range in tropical Northern Australia is where mirage was invented so vertical will always be a hefty problem for groups ..The toughest part of long range load develpoment will always be the VD. IMO..Lookin back at one of your posts u mention the chrono and bullet qualifing,i sorry i don't have that info as i don't use a chrono for load testing..Your question on the differences between sorted and unsorted is a tough one as i have been basic qualifing (weight, dia,base to ogive and AOL) since 1997..I recently coached a new guy in Light from a best of 3.5in group to a 1.8in at 550yds buy helping him set the gun and the loads and the basics on the bullets..The next step is to totally set upon the cases and the Sierra bullets to get it better..These particular 168 7mm Smks were as bad as i have seen in a factory projectile(7 thou in base to ogive and 30 thou in AOL in a single box)...Hope this helps..JR..Jeff Rogers</p></blockquote><p></p>
[QUOTE="a.JR, post: 33705, member: 1391"] Len,Your right about the drift ,i will give away drift anytime for a gain in vertical dispersion(VD)..My range in tropical Northern Australia is where mirage was invented so vertical will always be a hefty problem for groups ..The toughest part of long range load develpoment will always be the VD. IMO..Lookin back at one of your posts u mention the chrono and bullet qualifing,i sorry i don't have that info as i don't use a chrono for load testing..Your question on the differences between sorted and unsorted is a tough one as i have been basic qualifing (weight, dia,base to ogive and AOL) since 1997..I recently coached a new guy in Light from a best of 3.5in group to a 1.8in at 550yds buy helping him set the gun and the loads and the basics on the bullets..The next step is to totally set upon the cases and the Sierra bullets to get it better..These particular 168 7mm Smks were as bad as i have seen in a factory projectile(7 thou in base to ogive and 30 thou in AOL in a single box)...Hope this helps..JR..Jeff Rogers [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How do you determine "at the lands" by your method?
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