jermelott

Thanks for your research! You are not the first one to tell me that a little longer and stiffer is better(arrow that is). But, since I have spent $60.00 on 100 grain broadheads, I dont think ill be moving up to 125 grain.

drockw

Id say you will be fine with either or .400 or .340

Your realistic spine is probably somewhere in the middle of the two, but id be its closer to .400

I dont have a program handy right now so I cant tell you, but going from experience, with a DL that short you should be fine...

OHbowhntr

Okay, per OnTarget2, at 26" and 65#, a Destroyer 350 would need a spine in the .3417 range using a 26.5" arrow and a 100gr tip.....

Drop the arrow length all the way down to 25" and use a 65gr tip, and you're still looking at needing something in the .378 spine range.......

Seriously, most "generic" charts don't take into effect the cam aggression of speed bows, they are based on bows that are in the 300-310fps range, and they don't take into effect tip weight either. The numbers I spit out were per OnTarget2 which you can get your own trial copy for 2 weeks for free by going to www.pinwheelsoftware.com and downloading it.

Want to save a little money, check out these in a 65/80 (.340 spine).... http://gtm-test.cabelas.com.akadns.n...233&hasJS=true
I've shot these for 5 yrs, and in that time, I've "Robinhooded" 15 of them, 2 in 3 days when setting up a pair of bows. For $50 per raw dozen, they may be the BEST deal in arrows you'll find. Add about $1.50 - 2.00 to have 'em cut and fletched up, and you still have a very good price on a dozen VERY good arrows. Finished out at 26.5" with Blazers and a 100gr tip, you'd come in right around 395grains total weight.

jermelott

[quote=OHbowhntr;3662694]Okay, per OnTarget2, at 26" and 65#, a Destroyer 350 would need a spine in the .3417 range using a 26.5" arrow and a 100gr tip.....[quote]

Why would I shoot a 26.5" arrow when 25" is plenty long enough? Would that be to get the spine that much more perfect? I know we are only talking about 4.2 fps or 13.8 grains or a little flatter shooting arrow, just wondering if that extra 1.5" would really make a difference in tuning. Thank yall for all the responses!

TFOX

I ran your numbers through Archers Advantage and .400 is perfect at a 26" draw length.

jermelott

Does that take into account my aggressive cams? .400 is what I would like to shoot because they would be flatter shooting, but I want and what I need might be a little different. I dont want to spend $1500.00 on a rig and then get the wrong arrows! Im really trying to be very percise this year, makeing sure everything is as close to perfect as possible.

TFOX

Archers Advantage takes actual performance(speed) into account,unlike OT2 which only uses cam aggressiveness.(if you have an exact arrow weight and speed,I could calibrate AA to your exact specs)

I had OT2 and I decided that for me,AA was more accurate.

OT2 added some cam styles since I used it,partly because of me (and others) complaining to him that their program did not accurately cover the higher end speed bows and lower end soft cams.

jermelott

The arrow should weigh right at 372 grains. Since I dont have them yet, i dont know the FPS. But if I had to guess, it would shoot right at 372 FPS. Can you run it from that?

TFOX

Guessing doesn't work

You could shoot any arrow through a chrony to get a speed.

jermelott

I shot a 335 grain arrow through a chrony before my peep and loop and adjusting my tiller at 292FPS. I know that probably doesnt help.