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Rifles, Reloading, Optics, Equipment
Reloading
Question about seating the bullet straight
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<blockquote data-quote="7mmRHB" data-source="post: 91790" data-attributes="member: 3584"><p>DerekM,Iv'e been turning necks on all brands of brass for years and one thing I've learned is that just because the next batch is Lapua it doesn't mean you don't need to turn the necks. In the last two weeks I've turned two different lots of 6BR Norma brass,100 6.5-284,and 120pcs. 308win.Norma brass.</p><p>the first batch of 6BR brass was .00175 thicker on one side of the neck.(measured w/Starrett ball mic.). The next 100 6BR the necks were the best i've seen. they were off .00075 and could probably have been loaded accurately without neckturning. </p><p>The 6.5-284 brass was out nearly .003 from side to side and I don't think you could expect low run out without neck turning them. The 120 brass in 308win. were from two lots 20 of one lot 100 from another. the 20 were well under .001 diff.from side to side, the 100 were off over .003 same brand different lot.</p><p>In the middle of this I did 100pcs of 300 RUM brass from a new shipment at Sportsman warehouse and the necks were better (.0006) and more consistent than the mega buck brands. I realise that the Rem. brass was a fluke but I was just trying to make a point. NOBODY MAKES PERFECT BRASS</p><p>If you use a bushing die with no expander ball on unturned brass the outside of the neck is round but the inside of the neck is oval shaped. That can't be a good thing!</p><p>So use a bushing die but always turn the necks.</p><p>Im with you on the seat and turn bullet seating method. It works for reducing R.O.-----7mmrhb</p></blockquote><p></p>
[QUOTE="7mmRHB, post: 91790, member: 3584"] DerekM,Iv'e been turning necks on all brands of brass for years and one thing I've learned is that just because the next batch is Lapua it doesn't mean you don't need to turn the necks. In the last two weeks I've turned two different lots of 6BR Norma brass,100 6.5-284,and 120pcs. 308win.Norma brass. the first batch of 6BR brass was .00175 thicker on one side of the neck.(measured w/Starrett ball mic.). The next 100 6BR the necks were the best i've seen. they were off .00075 and could probably have been loaded accurately without neckturning. The 6.5-284 brass was out nearly .003 from side to side and I don't think you could expect low run out without neck turning them. The 120 brass in 308win. were from two lots 20 of one lot 100 from another. the 20 were well under .001 diff.from side to side, the 100 were off over .003 same brand different lot. In the middle of this I did 100pcs of 300 RUM brass from a new shipment at Sportsman warehouse and the necks were better (.0006) and more consistent than the mega buck brands. I realise that the Rem. brass was a fluke but I was just trying to make a point. NOBODY MAKES PERFECT BRASS If you use a bushing die with no expander ball on unturned brass the outside of the neck is round but the inside of the neck is oval shaped. That can't be a good thing! So use a bushing die but always turn the necks. Im with you on the seat and turn bullet seating method. It works for reducing R.O.-----7mmrhb [/QUOTE]
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Question about seating the bullet straight
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