re: Arrow type and selection

0t2 works good .. I have the app also..
I shoot a 29 inch bow. At 70 lbs . I cut my axis 300 spine arrows at 27.25 inches.. 75 grains of brass 125 grain head.. total arrow weight in 535 grains. 15% foc. I Have shot everything from 375 grains to 700 grains. This combo flies best for me and the Ot2 app says the spine is perfect..

Download the app it's 10 bucks or so with the add ons.. you can build the arrows in the app before you buy them.

Lancaster archery sells individual arrows. Once you narrow your weight range down you can order a few and see what you like.. gold tip also has a good system with their screw in weights. Velocity arrows are hard to beat . You can add as much weight as you want until you get to the one that flies best.. I know you said you want to stick with the current arrow but the gold tip system is the cheapest for tinkering until you get a weight and spine you like..