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Rifles, Reloading, Optics, Equipment
Reloading
6.5-06 vs 6.5X284 vs 6.5 Sherman
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<blockquote data-quote="Trickymissfit" data-source="post: 560080" data-attributes="member: 25383"><p>interesting comments, and well taken. But can I add here?</p><p> </p><p>One of the single greatest shooters of all time chimed in about the subject, and Ackley wrote about it in his book Hand Book For Shooters & Reloaders. Homer Powley is not a name to be taken lightly in the shooting world (I miss him), and he said that he felt that he felt bore capacity was linked to expansion ratios during the powder burn. High expansion ratios ment longer barrel life, and of course lower expansion ratios ment shorter barrel life. Ackley states that in many cases low expansion ratios ment a slight increase in velocity while gratly reducing barrel life, and as well being inflexable (as in being critical).</p><p> </p><p>Ackley also states there is no set way to determine max case capacity for a certain bore size. He does speak of the three to one factor, but also states there really is nothing written in stone regarding this issue. (note: he was refering to 1/3rd of the bullet weight being the max powder capacity in a case, or 50 grains for a 150 grain bullet). He speaks of the 22 bore having a max capacity of 35 grains of powder, and what happens with 40 grains of powder.</p><p> </p><p>I won't go into the chapter a lot here, but it's a good read, and will make you dig into your log books to compair notes. Looks like Parker is on track. I will reread this tonight and probably wear my fingers out on the calculator. </p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 560080, member: 25383"] interesting comments, and well taken. But can I add here? One of the single greatest shooters of all time chimed in about the subject, and Ackley wrote about it in his book Hand Book For Shooters & Reloaders. Homer Powley is not a name to be taken lightly in the shooting world (I miss him), and he said that he felt that he felt bore capacity was linked to expansion ratios during the powder burn. High expansion ratios ment longer barrel life, and of course lower expansion ratios ment shorter barrel life. Ackley states that in many cases low expansion ratios ment a slight increase in velocity while gratly reducing barrel life, and as well being inflexable (as in being critical). Ackley also states there is no set way to determine max case capacity for a certain bore size. He does speak of the three to one factor, but also states there really is nothing written in stone regarding this issue. (note: he was refering to 1/3rd of the bullet weight being the max powder capacity in a case, or 50 grains for a 150 grain bullet). He speaks of the 22 bore having a max capacity of 35 grains of powder, and what happens with 40 grains of powder. I won't go into the chapter a lot here, but it's a good read, and will make you dig into your log books to compair notes. Looks like Parker is on track. I will reread this tonight and probably wear my fingers out on the calculator. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
6.5-06 vs 6.5X284 vs 6.5 Sherman
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