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Neck tension trouble, 6.5x284

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Unread 09-03-2003, 12:26 PM
Silver Member
Join Date: Jan 2002
Location: Nashville, TN
Posts: 284
Re: Neck tension trouble, 6.5x284


Getting the doughnuts from neck turning is the common explination, but I get them on one of my rifles, and I do not neck turn. I think it has something to do with the chamber I'm using, as there are at least 5 others shooters out there getting doughnuts, that don't neck turn, same chamber reamer used.

Funny thing is, I reamed the necks on 10 and left 10 with doughnuts. My scores at 1000 were no different with the doughnuts. I dropped 1 point with the reamed, and 1 point with the doughnuts. Actually, my X count was 1 higher with the doughnut.

Maybe I'm just lucky.....

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Unread 09-06-2003, 04:44 PM
Junior Member
Join Date: Sep 2003
Location: Florida
Posts: 4
Re: Neck tension trouble, 6.5x284

I had a similar problem with both a 6.5x.284 and a .30-06 AI. I did not neck turn at all, but some old guru asked me how closely my dies matcked my chamber. I ended up re-reaming the 6.5x.284 with a Norma reamer and ended the problem. I also had very little sizing to do afterwards. I set up a FL die (redding) to neck size, and only had to size about 1/2 of the neck and never bumped the shoulder. I was only loading to about 2850, but it was tighter than I could shoot. [img]images/icons/smile.gif[/img]

The .30-06AI was a different story, I ended up oversizing the flash hole a bit and switched to non magnum primers. It seemed to me the brass was "flowing" forward faster than normal trimming and sizing could handle. I lost about 150 fps, but es went down to about 30 and the best groups were sub 6" at 750meters (the longest range I had access to at the time).
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