My setup is finally complete

Joined
Jun 5, 2022
Messages
41
Black eagle rampage 150 Spine 32"
Iron Will s100
Bowtech revolt x80 set a bit above 82lbs at 31 inches with performance mode on
Launching 720 grains at 262~ fps.
My shop ordered the 150 Spine even though I originally planned on going with a 200 spine setup but after some super strict tuning these things fly true out to 100
My main question is how overspined am I? I figure I am a bit but looking at black eagles spine chart it says I should be good to go.
 

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Joined
Jun 21, 2019
Messages
2,257
Location
Missouri
qSpine says you're stiffer than "optimal", but spine calculators/charts just give recommended starting points not set-in-stone requirements for good arrow flight. Like Rob said, if it tunes it tunes...no need to mess with it if it's working.

Bow inputs: 340 fps IBO, 82# DW, 31" DL, 33" ATA, 6.5" BH, 80% LO
Arrow inputs: 32" C2C, 180 gr front weight, 28 gr rear weight
Screenshot_20220611-132417_qSpine.jpg
 
OP
Oregonbred
Joined
Jun 5, 2022
Messages
41
what are you hunting?
Anything that I can acquire tags for. But this is mainly an elk arrow that might meet the unfortunate deer I find while looking for elk. I made this setup solely for elk and to keep in the back incase I ever get around to a moose hunt or something of similar size. I didn't intend on it being used for much smaller but this year I will be hunting pronghorn, deer, and elk. Not quite what I wanted for a speed goat but not much I can do now.
 

Super 91

Lil-Rokslider
Joined
Jun 2, 2015
Messages
123
Location
Roanoke, VA
It's hard to say how much overspined you may be, but if you are able to get it to tune well who cares, right? I most ALWAYS opt for a stiffer spine than the charts call for. And with a bow that is in good tune and halfway decent form, I have no issues getting my stiff arrows to tune well. I bought some GT Airstrikes the other day and according to the tune charts a 340 spine was just fine for my 70 pound Mach 1 at my draw length. Guess what? They won't tune and have a horrible horizontal tear through paper. Too weak. Put the same arrow through my 60 pound bow and guess what? It shoots a bullet hole. So I ordered some 250 spine shafts to play with as well. I normally shoot a 200 spine Kinetic and it tunes like a dream, so yeah, I'd much rather have a stiff arrow than too weak.
 
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