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Rifles, Reloading, Optics, Equipment
Reloading
Seating Depth Informative Thread
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<blockquote data-quote="YZ-80" data-source="post: 1820109" data-attributes="member: 109229"><p>This is informative. I wonder what the reason is for seating depth being such a significant contributor to accuracy from a physics standpoint. I'm wondering if it has to do with pressure dynamics in the case after detonation? At ignition, the bullet breaks free from its initial neck tension and then encounters resistance again after the "jump" when it encounters the lands. It would seem that this would effect pressure in the case and the consistency of the powder burn? It would also seem that a shorter "jump" would result in the bullet achieving "traction" with the lands more readily and closer to the throat? Are these contributing factors or am I all wet?</p><p></p><p>I always use an AOL gage and without exception seat all my stuff .015-.020" off and get .25 to .50 MOA results out to 300 yds. I don't see any reason to mess with it much but I'm not shooting out past 400 yards. </p><p></p><p>Thanks for the post!</p></blockquote><p></p>
[QUOTE="YZ-80, post: 1820109, member: 109229"] This is informative. I wonder what the reason is for seating depth being such a significant contributor to accuracy from a physics standpoint. I’m wondering if it has to do with pressure dynamics in the case after detonation? At ignition, the bullet breaks free from its initial neck tension and then encounters resistance again after the “jump” when it encounters the lands. It would seem that this would effect pressure in the case and the consistency of the powder burn? It would also seem that a shorter “jump” would result in the bullet achieving “traction” with the lands more readily and closer to the throat? Are these contributing factors or am I all wet? I always use an AOL gage and without exception seat all my stuff .015-.020” off and get .25 to .50 MOA results out to 300 yds. I don’t see any reason to mess with it much but I’m not shooting out past 400 yards. Thanks for the post! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Seating Depth Informative Thread
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