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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Case Dimensions and Pressure ?'s
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<blockquote data-quote="Earnhardt" data-source="post: 748226" data-attributes="member: 53157"><p>OK, Big time newbie question here.</p><p> </p><p>When changing case dimensions and neck angle of a cartidge how drastically does that effect chamber pressures and velocity?</p><p>When using the same exact weight bullet and powder how much more velocity and chamber pressure will a .300 WSSM have than a .300 Win Mag</p><p>Or, let's say you have a straight walled cartridge like a .458 Win Mag. If you took that same weight bullet and same weight/type powder and turned the cartridge into a wildcat cartridge how much would that effect pressure and velocity?</p><p>A 5% increase in pressure and velocity?</p><p> </p><p>How about the opposite. Take a 6mm PPC cartridge and use the same weight bullet and same weight/type powder in a straight walled case.</p><p>How much would the decrease pressure and velocity?</p><p>5%?</p><p> </p><p>Or doesn't it effect velocity and chamber pressure that much by changing the dimensions of the powder case while using the same weight bullet and powder?</p><p> </p><p>Thank you for your time.</p></blockquote><p></p>
[QUOTE="Earnhardt, post: 748226, member: 53157"] OK, Big time newbie question here. When changing case dimensions and neck angle of a cartidge how drastically does that effect chamber pressures and velocity? When using the same exact weight bullet and powder how much more velocity and chamber pressure will a .300 WSSM have than a .300 Win Mag Or, let's say you have a straight walled cartridge like a .458 Win Mag. If you took that same weight bullet and same weight/type powder and turned the cartridge into a wildcat cartridge how much would that effect pressure and velocity? A 5% increase in pressure and velocity? How about the opposite. Take a 6mm PPC cartridge and use the same weight bullet and same weight/type powder in a straight walled case. How much would the decrease pressure and velocity? 5%? Or doesn't it effect velocity and chamber pressure that much by changing the dimensions of the powder case while using the same weight bullet and powder? Thank you for your time. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Case Dimensions and Pressure ?'s
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