I have a 53lb@28" Big 5 (draw 28 1/2)and I'm using Stu Miller's Dynamic Spine finder to choose a spine. Should I use the generic selfbow/longbow choice? And what should I use for the center shot offset - I was thinking +3/16, maybe 1/4 with the leather side plate.
Generally speaking if I want a 29 1/2 fir shaft with a 160 grain point what spine weight would you choose.
Thanks Guys,
---steve
I think you'll need around a 65-70 spine. With Surewoods, they'll be heavy. Around 650-670 grains. If I were you, I'd call Braveheart Archery and get a sample pack of 60-65, 65-70, 70-75, just to be sure.
I've never had much luck with the calculator for my Hills. If the bow actually measures 53@28 (Hills have a rep for measuring 3-4 lbs. over the marked weight) then I'm thinking 65-70 as well at that length, and maybe even 70-75 especially if your shooting a FF string. A test pack is always a good idea if your not sure, because what works for one guy with that bow, doesn't work for the next who shoots it!
What Spanky said.
If your bow is center shot, a heavier spine usually works best. But with a traditional style LB, I have found my best flight comes from about 5 to 10 lbs of the draw weight. with about 55#, I would start with 55-60,or 60-65 with 160 gr. fp. Much depends on the bow design and whether it is set up for a dacron string or Fast Flight (or similar). In your case a call to Craig might be easiest, IMO.
Spanky is correct--all my Hills scale 4-5# heavier than marked. I just got a beauty from the classifieds here. Wesley Special marked 48@27 but actually scales 53@27! I don't know why this continues to be the case, but I just factor that in whenever I order or buy one used. Never been wrong yet!
With the strike plate, your Hill is +3/16 for use with Stu's calc. Do weigh your bow at your draw length to find your actual draw weight. Use the generic longbow/selfbow choice. If I'm not mistaken, Stu lists the Martin Stick which is a similar type of bow and calculations will come out almost identical. Pup
My Halfbreed is 55 @ 28 and I draw 29" and get 61 on my scale. I ordered in two batches of test shafts from Surewood recently and found the 70-75 fly like darts. Finished arrow weight of 685 grains with a 160 grain field point. I just ordered three dozen shafts yesterday.
almost all craig hill longbows are 2-5# heavier than listed. email stu miller directly about using his calculator.