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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Testing two rifles, identical chambers ...different barrels
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<blockquote data-quote="7mmRHB" data-source="post: 111714" data-attributes="member: 3584"><p>B.D. 408 I believe a more valid test of barrel speed would be to shoot each gun with the exact same amount of pressure not just same amount of powder. You might find out the canted 5R Rock barrel reduces friction enough to reduce pressures as well. When you increase the powder until you have the same pressure as the other barrel you usually see a velocity advantage. The 5R rifling shows much less engraving on recovered bullet jackets than standard rifling.I suspect thats due to the fact that there is a grove opposite a land in this configuration reducing stress on the bullet.</p><p>Looks like both will be shooters and your Smithing speaks for itself.------7mmrhb</p></blockquote><p></p>
[QUOTE="7mmRHB, post: 111714, member: 3584"] B.D. 408 I believe a more valid test of barrel speed would be to shoot each gun with the exact same amount of pressure not just same amount of powder. You might find out the canted 5R Rock barrel reduces friction enough to reduce pressures as well. When you increase the powder until you have the same pressure as the other barrel you usually see a velocity advantage. The 5R rifling shows much less engraving on recovered bullet jackets than standard rifling.I suspect thats due to the fact that there is a grove opposite a land in this configuration reducing stress on the bullet. Looks like both will be shooters and your Smithing speaks for itself.------7mmrhb [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Testing two rifles, identical chambers ...different barrels
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