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Rifles, Reloading, Optics, Equipment
7mm STW
How far do you have to jump the lands?
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<blockquote data-quote="emp1953" data-source="post: 2582861" data-attributes="member: 71817"><p>So far, all of my bolt action centerfires shoot sub moa groups at 0.018 to 0.020 off the lands. I re-establish a new Cartridge overall length with every bullet brand change as the bullet dimensions are usually different, the ogive is either more or less aggressive thus the point where it contacts the rifling is different. I made a portable loading bench that inserts into my trucks trailer hitch. I mount a single stage press, a bullet puller die and my final seater die. While at the range I will hone in on that off the lands distance. I always have accurate dial calipers on hand. This had helped me discover how much recoil can adversely effect cartridge length in the magazine. I always keep detailed records of what I've done and discovered just incase memory gets foggy.</p></blockquote><p></p>
[QUOTE="emp1953, post: 2582861, member: 71817"] So far, all of my bolt action centerfires shoot sub moa groups at 0.018 to 0.020 off the lands. I re-establish a new Cartridge overall length with every bullet brand change as the bullet dimensions are usually different, the ogive is either more or less aggressive thus the point where it contacts the rifling is different. I made a portable loading bench that inserts into my trucks trailer hitch. I mount a single stage press, a bullet puller die and my final seater die. While at the range I will hone in on that off the lands distance. I always have accurate dial calipers on hand. This had helped me discover how much recoil can adversely effect cartridge length in the magazine. I always keep detailed records of what I've done and discovered just incase memory gets foggy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
How far do you have to jump the lands?
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