Strother Rush arrow spine question

[bcbowhunter]

I recently bought a new 2012 Strother Sx Rush. I have always shot Easton Axis and plan to continue. With my old bow I shot 340's, but according to the Easton arrow selector I could be shooting 400's with the rush. Another factor is that with my new rest I will be shooting shorter arrows. Can anyone help me out? Thanks for your help.

New Set up:
Strother Sx Rush
70 LB
29.5" draw
QAD HX

Old set up:
Fred Bear Buckmasters G2
70 Lb.
29.5"
Trophy Taker drop away

[zramsey]

I think you will be fine, if not better off with the 340's. I'm guessing you shoot 100gr points?

[bcbowhunter]

Yes 100gr

[TexasCanesFan]

You need 340s with a 70 pound Rush without a doubt.

[bcbowhunter]

Yeah that was my gut feeling. Thanks for the input

[Cousin]

If it was 60 lbs, 400 but pulling 70 lbs go with the 340's.

[Hunter66]

I think the 340s would be best @ 70# for sure.

[12RingKing]

I'd use the 340s depending on length. You may be able to get away with 400s if they were short, but I wouldn't chance it.

You'll be plenty fast at 70 with your DL.

I say that because usually people want to downgrade spine stiffness to gain a few fps due to the lighter shaft weight.