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Rifles, Reloading, Optics, Equipment
Reloading
Quick Question reg. C.O.L.
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<blockquote data-quote="rscott5028" data-source="post: 533425" data-attributes="member: 24624"><p>Boomtube is correct. </p><p> </p><p>Nonetheless, the more common approach seems to be that you pick a seating depth (or jump to the lands) that seems reasonable and hold that constant while you run a ladder test to firstly look for pressure signs in your rifle throughout the published min/max load range. And, secondly to look for one or more nodes that give better results. i.e. tighter groups</p><p> </p><p>Then, begin fine tuning with the seating depth or jump/jam. </p><p> </p><p>Keep in mind that seating depth can change pressure substantially. I don't worry too much about giving more jump. That seemes to reduce pressure. But, as you get closer to the lands and jam the bullet into the lands, the pressure can go up substantially. </p><p> </p><p>Similarly, rifles with a lot of freebore will typically exhibit lower pressures and consequently lower velocity. But, they usually tolerate/require more powder in order to get the velocity back up. But, pressure increases accordingly. </p><p> </p><p>-- richard</p></blockquote><p></p>
[QUOTE="rscott5028, post: 533425, member: 24624"] Boomtube is correct. Nonetheless, the more common approach seems to be that you pick a seating depth (or jump to the lands) that seems reasonable and hold that constant while you run a ladder test to firstly look for pressure signs in your rifle throughout the published min/max load range. And, secondly to look for one or more nodes that give better results. i.e. tighter groups Then, begin fine tuning with the seating depth or jump/jam. Keep in mind that seating depth can change pressure substantially. I don't worry too much about giving more jump. That seemes to reduce pressure. But, as you get closer to the lands and jam the bullet into the lands, the pressure can go up substantially. Similarly, rifles with a lot of freebore will typically exhibit lower pressures and consequently lower velocity. But, they usually tolerate/require more powder in order to get the velocity back up. But, pressure increases accordingly. -- richard [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Quick Question reg. C.O.L.
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