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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7MM Nosler ABLR
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<blockquote data-quote="Canadian Bushman" data-source="post: 935532" data-attributes="member: 41122"><p>There are bullets that have high runout when seated and will throw groups up close, I.E., shoot a 1" group at 100 yds and also shoot 1" group at 300 yards. Sometimes this is because the bullet is leaving the barrel off axis and taking longer to align its nose to the direction its traveling. This does not have to happen and can usually be avoided when the ammo is loaded to its potential. Other problems can cause this as well but it seems long for caliber bullets exaggerate runout problems when fired through tight twist barrels at high speeds. It often gets accepted instead of cured. </p><p></p><p>1" groups at 300yds sounds like a accurate rifle but youre still giving up accuracy. If you fix the problem to the point where it will shoot .5" at a hundred chances are it will now shoot under an 1" at 300. </p><p></p><p>Im not gonna hijack this thread with a cartridge run out or physics discussion, but im betting if you work with those 150's enough they will will have no problem cutting ragged little holes at 100 yds.</p></blockquote><p></p>
[QUOTE="Canadian Bushman, post: 935532, member: 41122"] There are bullets that have high runout when seated and will throw groups up close, I.E., shoot a 1" group at 100 yds and also shoot 1" group at 300 yards. Sometimes this is because the bullet is leaving the barrel off axis and taking longer to align its nose to the direction its traveling. This does not have to happen and can usually be avoided when the ammo is loaded to its potential. Other problems can cause this as well but it seems long for caliber bullets exaggerate runout problems when fired through tight twist barrels at high speeds. It often gets accepted instead of cured. 1" groups at 300yds sounds like a accurate rifle but youre still giving up accuracy. If you fix the problem to the point where it will shoot .5" at a hundred chances are it will now shoot under an 1" at 300. Im not gonna hijack this thread with a cartridge run out or physics discussion, but im betting if you work with those 150's enough they will will have no problem cutting ragged little holes at 100 yds. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7MM Nosler ABLR
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