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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hammer Bullets Pressure Testing Results
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<blockquote data-quote="Veteran" data-source="post: 2832578" data-attributes="member: 118038"><p>Seems like you are on the right track to change initial pressure to 1400 or 1500 in the model, but you make no mention of accounting for friction loss in the bbl. especially say a 28 inch bbl. Its pure engineering. Lower friction loss = higher velocity. Less bullet x section contacting the lands and rifling = less friction and lower initial pressure.</p><p></p><p>It would seem youd expect more velocity gain for a given load in a longer barrel using hammers vs. standard bullets</p><p>because of friction reduction. </p><p></p><p>You consume pressure in friction loss, ie, the lower the friction loss at the end of the bbl, the higher the pressure at the muzzle. The higher the pressure at the muzzle, the higher the muzzle velocity.</p><p></p><p>Its the pressure in the whole rifle system, not just the initial pressure that matters. The whole concept of hammers is reduced x section and friction loss.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2832578, member: 118038"] Seems like you are on the right track to change initial pressure to 1400 or 1500 in the model, but you make no mention of accounting for friction loss in the bbl. especially say a 28 inch bbl. Its pure engineering. Lower friction loss = higher velocity. Less bullet x section contacting the lands and rifling = less friction and lower initial pressure. It would seem youd expect more velocity gain for a given load in a longer barrel using hammers vs. standard bullets because of friction reduction. You consume pressure in friction loss, ie, the lower the friction loss at the end of the bbl, the higher the pressure at the muzzle. The higher the pressure at the muzzle, the higher the muzzle velocity. Its the pressure in the whole rifle system, not just the initial pressure that matters. The whole concept of hammers is reduced x section and friction loss. [/QUOTE]
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Hammer Bullets Pressure Testing Results
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