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Rifles, Reloading, Optics, Equipment
Reloading
Neck tension
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<blockquote data-quote="MagnumManiac" data-source="post: 2217795" data-attributes="member: 10755"><p>Talking of consistency with IF, the most drastic thing for me, besides annealing after every shot before sizing, is using powdered graphite on the insides of my necks. My ES/SD shrunk doing this and velocities became slightly less.</p><p>I HBN coat my solid CNC turned 323g .338" bullets for my 338-416 Rigby, and the velocity in that rarely alters by 8fps, which is the lowest ES of any of my rifles, including my high end comp F-class guns, which average in the low teens.</p><p>The only 2 cartridges I size 85-95% of the necks are my 264WM & 300WM.</p><p>I find neck length has little to do with Precision. My 25-06 that I use in Hunter comp shoots extremely well with .180-.200" of the neck sized with 115g Berger Hybrids, this just shows that at .003" IF, this is sufficient to keep bullets straight while just kissing the rifling, maybe .002" into the rifling proper.</p><p>My 22-250AI is similar, only needs .200" of bullet bearing in the neck.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2217795, member: 10755"] Talking of consistency with IF, the most drastic thing for me, besides annealing after every shot before sizing, is using powdered graphite on the insides of my necks. My ES/SD shrunk doing this and velocities became slightly less. I HBN coat my solid CNC turned 323g .338” bullets for my 338-416 Rigby, and the velocity in that rarely alters by 8fps, which is the lowest ES of any of my rifles, including my high end comp F-class guns, which average in the low teens. The only 2 cartridges I size 85-95% of the necks are my 264WM & 300WM. I find neck length has little to do with Precision. My 25-06 that I use in Hunter comp shoots extremely well with .180-.200” of the neck sized with 115g Berger Hybrids, this just shows that at .003” IF, this is sufficient to keep bullets straight while just kissing the rifling, maybe .002” into the rifling proper. My 22-250AI is similar, only needs .200” of bullet bearing in the neck. Cheers. [/QUOTE]
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Neck tension
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