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Rifles, Reloading, Optics, Equipment
Reloading
Bullet Seating Depth
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<blockquote data-quote="260VLD" data-source="post: 959374" data-attributes="member: 65943"><p>Measuring/ batching base to ogive will get you half way there , now if you want to get real picky , you need to consider where the seater stem contacts the projectile as the bullet is seated, for not all ogive to bullet tips are the same. Therefore if the seater stem contacts the bullet .002" further off than the previous bullet then you will still have a ogive jump variance , will you not ? </p><p>So you will batch base to ogive and then batch that batch into sub lots, the ogive to where the seater stem contacts the bullet tip.The only way to do that is to use a Bob Green Comparator which is sort of like a barrel chamber , you insert a projectile into it, the other end has a machined seater stem on top of which there is a dial indicator , the chamber has a throat reamed into it so the projectile as it is pushed in contacts the lands and the indicator gives you a read out thereby creating your sub lots.</p><p></p><p>Hope this makes sense but search Bob Greens Comparator for a better explanation.</p><p></p><p>Mike.</p></blockquote><p></p>
[QUOTE="260VLD, post: 959374, member: 65943"] Measuring/ batching base to ogive will get you half way there , now if you want to get real picky , you need to consider where the seater stem contacts the projectile as the bullet is seated, for not all ogive to bullet tips are the same. Therefore if the seater stem contacts the bullet .002" further off than the previous bullet then you will still have a ogive jump variance , will you not ? So you will batch base to ogive and then batch that batch into sub lots, the ogive to where the seater stem contacts the bullet tip.The only way to do that is to use a Bob Green Comparator which is sort of like a barrel chamber , you insert a projectile into it, the other end has a machined seater stem on top of which there is a dial indicator , the chamber has a throat reamed into it so the projectile as it is pushed in contacts the lands and the indicator gives you a read out thereby creating your sub lots. Hope this makes sense but search Bob Greens Comparator for a better explanation. Mike. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Bullet Seating Depth
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