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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Shilen barrel rifling-4 groove ratchet vs traditional
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<blockquote data-quote="barnesuser28" data-source="post: 949430" data-attributes="member: 43468"><p>According to Mr. Bryan Litz in his book "Applied Ballistics for Long-Range Shooting", the smoother and shallower the engraving of the rifling is, the greater gyroscopic stability will be at extended long range. It doesnt make a huge difference but the difference between a 10% +- roll dampening coefficient results in a 4% difference in gyroscopic stability once the bullet reaches transonic speed. The lesser the roll dampening coefficient (less and shallower the engraving of the bullet), the greater stability is once it reaches transonic speed. Btw, i think you will like your 284 win, i shot mine at 1512 yards today, it did well considering the bullet was going subsonic about 20 yards before the target.</p></blockquote><p></p>
[QUOTE="barnesuser28, post: 949430, member: 43468"] According to Mr. Bryan Litz in his book "Applied Ballistics for Long-Range Shooting", the smoother and shallower the engraving of the rifling is, the greater gyroscopic stability will be at extended long range. It doesnt make a huge difference but the difference between a 10% +- roll dampening coefficient results in a 4% difference in gyroscopic stability once the bullet reaches transonic speed. The lesser the roll dampening coefficient (less and shallower the engraving of the bullet), the greater stability is once it reaches transonic speed. Btw, i think you will like your 284 win, i shot mine at 1512 yards today, it did well considering the bullet was going subsonic about 20 yards before the target. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Shilen barrel rifling-4 groove ratchet vs traditional
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