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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 Remington AI Build
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<blockquote data-quote="J E Custom" data-source="post: 1663321" data-attributes="member: 2736"><p>We have some smart guys on this site !! I am a big fan of PO Ackley And I have most of his books but didn't know that there was only a 40o Ackley in 260 Remington. When he started testing different shoulder angles, he started trying 28o shoulder angles. Then he went to 30o shoulders. next he tried 32o angled shoulders. Then he followed up with 35o shoulders. still trying to find the optimum shoulder angels he went to 40o degrees. he found that 40 degrees was optimum even though he tried up to 50o.</p><p></p><p>I found that up to 30 cal he had tried 3 or 4 different 28o degree shouldered cases,about 6 different cartridges with 30o degrees, one or two with 35o degrees and 35 to 40 with 40o shoulders that you can still find dies for (He was a busy man) the only 260 Remington he tested was 40o degrees. all others would be called Improved.</p><p></p><p>There are many other wildcatters that have included these shoulder angles in their design and these are considered "Improved" but don't wear the Ackley name. The 30 and 35o degree shoulders have been very popular in some shooting circles and are widely used by others wanting to get optimum capacity with good feeding consistency. I have never found the Ackley's to be lacking in performance.</p><p></p><p>There is very little difference that I have found between the 30o and the 40o shoulder except a little better case life.</p><p></p><p>For those that are interested in a little Ackley history.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1663321, member: 2736"] We have some smart guys on this site !! I am a big fan of PO Ackley And I have most of his books but didn't know that there was only a 40o Ackley in 260 Remington. When he started testing different shoulder angles, he started trying 28o shoulder angles. Then he went to 30o shoulders. next he tried 32o angled shoulders. Then he followed up with 35o shoulders. still trying to find the optimum shoulder angels he went to 40o degrees. he found that 40 degrees was optimum even though he tried up to 50o. I found that up to 30 cal he had tried 3 or 4 different 28o degree shouldered cases,about 6 different cartridges with 30o degrees, one or two with 35o degrees and 35 to 40 with 40o shoulders that you can still find dies for (He was a busy man) the only 260 Remington he tested was 40o degrees. all others would be called Improved. There are many other wildcatters that have included these shoulder angles in their design and these are considered "Improved" but don't wear the Ackley name. The 30 and 35o degree shoulders have been very popular in some shooting circles and are widely used by others wanting to get optimum capacity with good feeding consistency. I have never found the Ackley's to be lacking in performance. There is very little difference that I have found between the 30o and the 40o shoulder except a little better case life. For those that are interested in a little Ackley history. J E CUSTOM [/QUOTE]
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