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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="Savage 12BVSS" data-source="post: 1939761" data-attributes="member: 112413"><p>I only noticed problems with accuracy when correcting rounds that were .003 and above, you risk bending or pushing the case neck out of round with the force of tweaking them straight. If you use good die's (forster benchrest-whidden-redding) and remove the sizer button and stem from the sizing dies, you will greatly reduce runout in loaded cartridges. If you neck size with mandrel expander dies (sinclair style) or collet mandrel dies (lee style) it will further reduce runout in cartridges. Some presses with movement in the dies or shellholder to align dies and cartridge better (mec marksman-forster co ax-rcbs summit) will also help get you there with runout. Turning the cartridge at least once or even twice in the bullet seating stroke can also help in the runout elimination attempt. I produce loaded ammo that runs between .0005 to .0015 for four different cartridges, anything over .001 gets a light tweak on a hornady gauge pictured above to keep all rounds under .001 runout. </p><p></p><p>Some believe its unnecessary to adjust or care about runout, others do and can see the difference in a tight shooting rifle with a good marksman. I believe when you get to 1/2" or better its a worthwhile addition to your reloading methods. Its a no brainer that it's not going to make accuracy any worse to keep ammo straight as possible and its the tweaking hard on very high runout loads that can cause even greater problems than ignoring it all together. All IMHO and and with hands on experience, its not going to make a MOA gun suddenly shoot 1/4" groups of course.</p></blockquote><p></p>
[QUOTE="Savage 12BVSS, post: 1939761, member: 112413"] I only noticed problems with accuracy when correcting rounds that were .003 and above, you risk bending or pushing the case neck out of round with the force of tweaking them straight. If you use good die's (forster benchrest-whidden-redding) and remove the sizer button and stem from the sizing dies, you will greatly reduce runout in loaded cartridges. If you neck size with mandrel expander dies (sinclair style) or collet mandrel dies (lee style) it will further reduce runout in cartridges. Some presses with movement in the dies or shellholder to align dies and cartridge better (mec marksman-forster co ax-rcbs summit) will also help get you there with runout. Turning the cartridge at least once or even twice in the bullet seating stroke can also help in the runout elimination attempt. I produce loaded ammo that runs between .0005 to .0015 for four different cartridges, anything over .001 gets a light tweak on a hornady gauge pictured above to keep all rounds under .001 runout. Some believe its unnecessary to adjust or care about runout, others do and can see the difference in a tight shooting rifle with a good marksman. I believe when you get to 1/2" or better its a worthwhile addition to your reloading methods. Its a no brainer that it's not going to make accuracy any worse to keep ammo straight as possible and its the tweaking hard on very high runout loads that can cause even greater problems than ignoring it all together. All IMHO and and with hands on experience, its not going to make a MOA gun suddenly shoot 1/4" groups of course. [/QUOTE]
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