Needing advice on arrow spine/build

[Highvoltage1]

Setting my bow up for elk this year. I shoot a 2011 quest hammer and have a 28” draw. I plan on shooting 65-70 lbs draw. Right now for eastern deer I shoot 60 lbs with Easton axis 5mm traditional hit insert and nocks with 2” blazers, 400 spline. I’ve been trying to dig into Eastons spline chart and even talked to them which wasn’t very helpful. I’d like to add the 75 gr hit insert and shoot the 125 exodus full this year. My question is how to figure what spline I need. I’ll assume the 400 won’t cut it with the added weight. I’m guessing a 300 but not sure. Any help would be great. Btw I’ll probably be around 26.5” arrow length.

 

[Billy Goat]

Rule of thumb is to add 3# draw weight for every 25 grains.

So 70# plus an additional 12# would mean look at 82# on the spine chart for your arrow length.

I'd probably just go 300's.

 

[Shawn_Guinn]

That short of an arrow and weight up front I would definitely go 300

 

[Samdemarais]

I shoot similar specs and use 300 spine. Should be good. You can buy arrows by the single on Lancaster. Maybe buy 2-3 build them and tune em. Once you figure out exactly what works then buy the whole dozen.

 

[SharpEnd]

For the Axis at 28" and 65-70lbs and 200gr up front, definitely go with 300. The qSpine app is a useful tool to plug in all of your bow specs, and every detail about the arrow (nock, insert, wrap, fletching, etc) and fine the appropriate stiffness spine.

 

[Highvoltage1]

Thanks guys appreciate the quick responses!

 

[406unltd]

this is what the program spits out.
both are with 68lbs and 27” arrow.
That bow even at ibo specs isn’t a barn burner.

 

[SharpEnd]

Something looks off, as the dynamic spine is the same for both arrows. For some reason in qSpine if you set the arrow specs, run it, and then change to a different spine from the results screen you have to go back to the arrow specs again and make sure it hasn't reset the insert and point weights to standard for that arrow. Messes with results every time for me.

edit - Also, I missed the bow type, that one is older and slower IBO than current 70lb gear. Could probably get by with 340s, although with the amount of weight out front, I'd want to get one of each and do some paper testing to see if one flies better. At 65 lbs it might like one, at 70 it might like the other.

 

[Highvoltage1]

Gotcha, yea it’s a 2011. It’s got some age but it’s pretty smooth and forgiving, it’s got the solo cam as well which I like.

 

[406unltd]

Ya it’s weird I noticed that too. The weights for components were checked and entered correctly. I went back in and ran it with the hunting only function, and it moved the spines a little bit. The dynamic still stayed the same between them. Weird cause when I run my setup it changes the dynamic when I fiddle with points so I’m not sure why it’s stuck on this one in particular.

 

[Twitch]

this is what the program spits out.
both are with 68lbs and 27” arrow.
That bow even at ibo specs isn’t a barn burner.

I can't get that app to do anything for me. I got so frustrated trying to get an output like that after entering all my data, I just said screw it and deleted the app.