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Rifles, Reloading, Optics, Equipment
Reloading
Nosler ABLR Jump
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<blockquote data-quote="aushunter1" data-source="post: 1939876" data-attributes="member: 57533"><p>Well the subject of seating depth & also the affects of seating depth & throat errosion has been covered quite a lot on here in some of these threads-</p><p>[URL unfurl="true"]https://www.longrangehunting.com/threads/test-seating-depth-with-each-powder.243760/#post-1919148[/URL]</p><p></p><p>[URL unfurl="true"]https://www.longrangehunting.com/threads/bullet-jump-vs-throat-erosion.242948/[/URL]</p><p></p><p>There is the Berger method you could look at as well as a theory even though its a different projectile.</p><p></p><p>I have my own method as many do, I start all my reloading @10 thou, find the node(s) do another test changing the CBTO to 5thou, 15thou & 20thou, find the best from that then if it needs tweeking again I will do some .1gr powder increment changes from that charge.</p><p></p><p>Ive never had to seat any deeper than 20thou before getting a result.</p><p></p><p>Also I dont shoot 3 shot groups, I shoot 5 for the reason you outlined in the comment "0.060 that shot two through the same hole, but then had a flier 1-1/2 minutes high", if you shot a 4th & a 5th it would be more evedent if it is a decent node.</p><p>I used to shoot 3 then found myself having to re shoot same charges again because of the same reason!</p><p></p><p>I have never used any Alliant powder but imo you have the right powder for the 270 in the H4831 although I use the SC version.</p></blockquote><p></p>
[QUOTE="aushunter1, post: 1939876, member: 57533"] Well the subject of seating depth & also the affects of seating depth & throat errosion has been covered quite a lot on here in some of these threads- [URL unfurl="true"]https://www.longrangehunting.com/threads/test-seating-depth-with-each-powder.243760/#post-1919148[/URL] [URL unfurl="true"]https://www.longrangehunting.com/threads/bullet-jump-vs-throat-erosion.242948/[/URL] There is the Berger method you could look at as well as a theory even though its a different projectile. I have my own method as many do, I start all my reloading @10 thou, find the node(s) do another test changing the CBTO to 5thou, 15thou & 20thou, find the best from that then if it needs tweeking again I will do some .1gr powder increment changes from that charge. Ive never had to seat any deeper than 20thou before getting a result. Also I dont shoot 3 shot groups, I shoot 5 for the reason you outlined in the comment "0.060 that shot two through the same hole, but then had a flier 1-1/2 minutes high", if you shot a 4th & a 5th it would be more evedent if it is a decent node. I used to shoot 3 then found myself having to re shoot same charges again because of the same reason! I have never used any Alliant powder but imo you have the right powder for the 270 in the H4831 although I use the SC version. [/QUOTE]
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Nosler ABLR Jump
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