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Hunting
Long Range Hunting & Shooting
.243 Ackley Improved vs .243 Winchester
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<blockquote data-quote="J E Custom" data-source="post: 1172022" data-attributes="member: 2736"><p>When going to an Ackley Improved there are several reasons that make it worthwhile.</p><p></p><p>You will get slight increase in velocity because of the volume increase (Very small unless you move the shoulder forward and shorten the neck).</p><p></p><p>However you may get an increase because of the efficiency of the 40o shoulder.</p><p></p><p>The main advantage if you use the 243 head space gauge to set the head space is that you can use the brass you already have and the feed rails and mag length will remain the same. brass life is greatly improved because AI cases don't need frequent trimming.</p><p></p><p>I would go with a 1 in 9 twist with a 24" to 26" barrel and at least a # 4 or larger contour.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1172022, member: 2736"] When going to an Ackley Improved there are several reasons that make it worthwhile. You will get slight increase in velocity because of the volume increase (Very small unless you move the shoulder forward and shorten the neck). However you may get an increase because of the efficiency of the 40o shoulder. The main advantage if you use the 243 head space gauge to set the head space is that you can use the brass you already have and the feed rails and mag length will remain the same. brass life is greatly improved because AI cases don't need frequent trimming. I would go with a 1 in 9 twist with a 24" to 26" barrel and at least a # 4 or larger contour. J E CUSTOM [/QUOTE]
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.243 Ackley Improved vs .243 Winchester
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