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Rifles, Reloading, Optics, Equipment
Reloading
working a load, adjusting COAL
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<blockquote data-quote="FearNoWind" data-source="post: 976086" data-attributes="member: 50867"><p>It's easier to understand, IMO, if you look at seating affecting pressure as a two way street. One direction (seating the bullet deeper) decreases the amount of space between the bullet and the powder (causing less room for expansion upon ignition) to the pressure in the case increases proportionately (althouth not necessary linearly) as the bullet is seated deeper. If you seat too close to the lands you create a "plugged barrel" affect which increases total chamber pressures. The key is to find a bullet seating depth that allows a safe pressure to build with a given powder charge.</p></blockquote><p></p>
[QUOTE="FearNoWind, post: 976086, member: 50867"] It's easier to understand, IMO, if you look at seating affecting pressure as a two way street. One direction (seating the bullet deeper) decreases the amount of space between the bullet and the powder (causing less room for expansion upon ignition) to the pressure in the case increases proportionately (althouth not necessary linearly) as the bullet is seated deeper. If you seat too close to the lands you create a "plugged barrel" affect which increases total chamber pressures. The key is to find a bullet seating depth that allows a safe pressure to build with a given powder charge. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
working a load, adjusting COAL
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