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Main Boards => PowWow => Topic started by: coaster500 on January 30, 2010, 08:03:00 PM
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I currently have some 29" Sitka Spruce 23/64 50/55 spine with 125 grain tips that shoot perfect from the bow I ordered them for.
My question is how much spine weight would I need to shoot a 175 grain instead of the 125 grain head from the same bow? I have some Abowyer Brown Bears I would like to try.
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download Stu's Calculator and check ,just google it
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Kip, I'd say 60/65 should work but you may have to have them at 30"
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I think you should probably only need to go up one spine group unless you are marginal now. I would try 55-60.
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I tried to use Stu's calculator but with wood I don't think I'm entering things right. I've used it with success on carbons but I'm doing something wrong with the wood?
Kenneth, I'll try 55/60's (I have some) and work from there. I don't have any 60/65's so I hope they work. I thought 55/60 might be lite?
Thank you
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I'm shooting 55/60 out of my Voodoo 45#@28" and I draw 29". They are 30" BOP with 190gr. heads. If the 55/60's are light send me a PM. I have the test kit from 3R that I've been using for all my bows and I'll send you a 60/65.
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I'll try to test the 55/60's on my day off Wednesday.
Kenneth,
Thank you....I may take you up on that :)
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Coaster, I agree that you might need to go up 5#-10#, but just for the H of it, try them on your current arrows/shafts as well. You might be surprised at how well they shoot. Wood is a lot more forgiving than carbon. Good luck.
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I'm with Orion, that's not much of an increase and there's a real good chance they'll shoot on the shafting you've got. If not I doubt you'd need to cut more than a quarter inch off them to bring them in.
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I'll give it a try, sure can't hurt and I've got a mess of them.
Thank you