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Rifles, Reloading, Optics, Equipment
Reloading
Carbon on the outside of the case neck after firing?
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<blockquote data-quote="KiloTango" data-source="post: 853470" data-attributes="member: 64678"><p>In the different loads I've tested, the most accurate at 100 yards leaves carbon around the necks of fired cases(ie almost black). A slightly hotter load I found more accurate at 600 yards leaves much less carbon on the case necks(some slight carbon deposits).</p><p>Additional info:</p><p>6.5x47</p><p>130gr Bergers</p><p>H4350</p><p>39.0gr yields 1/4-1/3moa at 100, and 2" vertical by 5" horizontal 10 shot groups in light variable winds.</p><p>39.7gr yields 1/2-3/4moa at 100, and 1" vertical by 3.5" horizontal 10 shot groups in the same winds.</p><p>The carbon around the necks never goes past the necks. I had read somewhere that carbon around the necks is a sign of low pressures? The 39.7gr of H4350 is a max load in Berger's manual...I had tried a load at 40.0gr with no pressure signs when I was developing a load at 100 yards, but did not check how much carbon was around the necks...is this something I should be worried about?</p><p>Thanks,</p><p>Ken</p></blockquote><p></p>
[QUOTE="KiloTango, post: 853470, member: 64678"] In the different loads I've tested, the most accurate at 100 yards leaves carbon around the necks of fired cases(ie almost black). A slightly hotter load I found more accurate at 600 yards leaves much less carbon on the case necks(some slight carbon deposits). Additional info: 6.5x47 130gr Bergers H4350 39.0gr yields 1/4-1/3moa at 100, and 2" vertical by 5" horizontal 10 shot groups in light variable winds. 39.7gr yields 1/2-3/4moa at 100, and 1" vertical by 3.5" horizontal 10 shot groups in the same winds. The carbon around the necks never goes past the necks. I had read somewhere that carbon around the necks is a sign of low pressures? The 39.7gr of H4350 is a max load in Berger's manual...I had tried a load at 40.0gr with no pressure signs when I was developing a load at 100 yards, but did not check how much carbon was around the necks...is this something I should be worried about? Thanks, Ken [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Carbon on the outside of the case neck after firing?
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