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<blockquote data-quote="dirtball" data-source="post: 269191" data-attributes="member: 7344"><p>With the newer drop-a-way rests going to a stiffer spine is usually a good thing. Spine testing arrows when you were shooting around the riser i.e. recurve bow, was very critical because the arrow had to bend its way around the riser as it left the bow. With a two prong rest it is much less critical, and with a drop-a-way IMHO you should shoot the stiffest arrow you can find. When your only option was aluminum that meant a VERY heavy shaft, but with the carbon, or aluminum/carbon ACC you can get to a 300 spine and still be under 10gr per inch of shaft. This has several benefits, first the arrow retains more of the bows energy when it is launched because there is little to no flexing of the shaft, and on the other end you will get more penetration for the same reason. Second, a stiff shaft is much easier to tune, see my other post on Mechanical vs fixed broadheads.</p><p><a href="http://www.longrangehunting.com/forums/f34/broadheads-mech-vs-fixed-40032/index2.html" target="_blank">http://www.longrangehunting.com/forums/f34/broadheads-mech-vs-fixed-40032/index2.html</a></p><p></p><p>Good Luck</p><p>Dave</p></blockquote><p></p>
[QUOTE="dirtball, post: 269191, member: 7344"] With the newer drop-a-way rests going to a stiffer spine is usually a good thing. Spine testing arrows when you were shooting around the riser i.e. recurve bow, was very critical because the arrow had to bend its way around the riser as it left the bow. With a two prong rest it is much less critical, and with a drop-a-way IMHO you should shoot the stiffest arrow you can find. When your only option was aluminum that meant a VERY heavy shaft, but with the carbon, or aluminum/carbon ACC you can get to a 300 spine and still be under 10gr per inch of shaft. This has several benefits, first the arrow retains more of the bows energy when it is launched because there is little to no flexing of the shaft, and on the other end you will get more penetration for the same reason. Second, a stiff shaft is much easier to tune, see my other post on Mechanical vs fixed broadheads. [url]http://www.longrangehunting.com/forums/f34/broadheads-mech-vs-fixed-40032/index2.html[/url] Good Luck Dave [/QUOTE]
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