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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder bumping loaded rounds
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<blockquote data-quote="Bullet bumper" data-source="post: 1323737" data-attributes="member: 17844"><p>Another thing is that it's the chamber dimentions that set the volume of a certain specific case even though it may be sized down extra before firing ( not withstanding head clearance issues ) it will still expand out to the full chamber dimension upon firing setting it's max volume .</p><p>So if the load in that case was safe with it being jammed into the chamber with bolt camming force then it will still be safe expanded to the max chamber dimensions. The chamber volume remains the same in each case for the specif ammo case . </p><p>If the round can be jammed in with bolt camming force then I can't see the difference with sizing it down just a small amount so the bolt can close a bit easier but the ammo still has about zero head clearance . Slightly sized It will just expand back up to full chamber dimensions and be the same pressure . </p><p>It's when you start sizing down ammo loaded for another chamber in another gun to fit into your smaller chamber that pressure will rise . </p><p>I am still not recommending that you bump loaded rounds . Just discussing the underlying issues .</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 1323737, member: 17844"] Another thing is that it's the chamber dimentions that set the volume of a certain specific case even though it may be sized down extra before firing ( not withstanding head clearance issues ) it will still expand out to the full chamber dimension upon firing setting it's max volume . So if the load in that case was safe with it being jammed into the chamber with bolt camming force then it will still be safe expanded to the max chamber dimensions. The chamber volume remains the same in each case for the specif ammo case . If the round can be jammed in with bolt camming force then I can't see the difference with sizing it down just a small amount so the bolt can close a bit easier but the ammo still has about zero head clearance . Slightly sized It will just expand back up to full chamber dimensions and be the same pressure . It's when you start sizing down ammo loaded for another chamber in another gun to fit into your smaller chamber that pressure will rise . I am still not recommending that you bump loaded rounds . Just discussing the underlying issues . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder bumping loaded rounds
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