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Rifles, Reloading, Optics, Equipment
Reloading
How do you straighten runout?
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<blockquote data-quote="Bart B" data-source="post: 488391" data-attributes="member: 5302"><p>When a bunch of us developed the .308 Win. Palma ammo for the 1992 World Championships, our load was with new, virgin Winchester cases with a 3 grain spread, metered charges of IMR4895 with a 3/10ths grain spread, and Sierrra's then new 155-gr Palma bullet seated with runout up to .003 inch. All made on two Dillon 1050 progressive presses.</p><p></p><p>Tests with a 20 shot group of random ammo put 'em all inside 2.8 inches at 600 yards. The top 20 to 30 long range competitors from around the world with a variety of tifle barrel makes and specs all said it was sub half-MOA ammo at 600 yards in their rifles. </p><p></p><p>Darned few, if any, benchrest rifles do that well. And this was with an old 'pre '64 Win. action conventionally bedded in a wood stock.</p><p></p><p>Everything doesn't have to be "exact" for really good accuracy. There's more inaccurate shots with unbalanced bullets in a lot than what .002" of runout causes.</p></blockquote><p></p>
[QUOTE="Bart B, post: 488391, member: 5302"] When a bunch of us developed the .308 Win. Palma ammo for the 1992 World Championships, our load was with new, virgin Winchester cases with a 3 grain spread, metered charges of IMR4895 with a 3/10ths grain spread, and Sierrra's then new 155-gr Palma bullet seated with runout up to .003 inch. All made on two Dillon 1050 progressive presses. Tests with a 20 shot group of random ammo put 'em all inside 2.8 inches at 600 yards. The top 20 to 30 long range competitors from around the world with a variety of tifle barrel makes and specs all said it was sub half-MOA ammo at 600 yards in their rifles. Darned few, if any, benchrest rifles do that well. And this was with an old 'pre '64 Win. action conventionally bedded in a wood stock. Everything doesn't have to be "exact" for really good accuracy. There's more inaccurate shots with unbalanced bullets in a lot than what .002" of runout causes. [/QUOTE]
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How do you straighten runout?
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