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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Super Fast Twist Barrels for Hammer Bullets
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<blockquote data-quote="tacomHQ" data-source="post: 2887719" data-attributes="member: 67159"><p>In short- the gyroscopic stability tables are good for the big solids- you would lean towards 2.0 (or more?). </p><p>Have you seen any argument against overspinning the solid bullet?</p><p>Skidding during the initial contact with the rifling?</p><p>I ask that, not in argument but from expensive experience (twist rate). We built two rifles based on claimed twist requirements (tables and by email) only to have both of them fail on the solids (shoot jacketed lights out). Only to find the limited number of competitors were shooting a twist value 1.5points lower than book values. Expensive lesson.</p><p>Also - please chime in- shooting ultra long distances (way past transonic) if you are down range you can here the differences in the bullets stability. Bullet Amfg sounds like a bubble bee, bullet Bmfg sounds like a fly. The only way to make that noise is nose gyration. You also find the ballistic solvers are... well ... +/- a couple of hundred yards. Not that we can expect them to take into account what is happening at max ordanance of 1500-2500ft.</p></blockquote><p></p>
[QUOTE="tacomHQ, post: 2887719, member: 67159"] In short- the gyroscopic stability tables are good for the big solids- you would lean towards 2.0 (or more?). Have you seen any argument against overspinning the solid bullet? Skidding during the initial contact with the rifling? I ask that, not in argument but from expensive experience (twist rate). We built two rifles based on claimed twist requirements (tables and by email) only to have both of them fail on the solids (shoot jacketed lights out). Only to find the limited number of competitors were shooting a twist value 1.5points lower than book values. Expensive lesson. Also - please chime in- shooting ultra long distances (way past transonic) if you are down range you can here the differences in the bullets stability. Bullet Amfg sounds like a bubble bee, bullet Bmfg sounds like a fly. The only way to make that noise is nose gyration. You also find the ballistic solvers are... well ... +/- a couple of hundred yards. Not that we can expect them to take into account what is happening at max ordanance of 1500-2500ft. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Super Fast Twist Barrels for Hammer Bullets
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