Spine Selection Mach 30 FDS

[Artemis]

I'm picking up a Mach 30 FDS this week. I shoot 28" 65 lbs and looking at Victory HLR 300 total arrow weight 438 grains +/-8. Victory chart has me right on the cusp of 300 or 350 anyone have similar experience? How did it go?

Thanks

 

[tradman]

My draw length is a 28.5, bow pulling around 60 to 65lbs. I shoot both the 350 and 300 spine. My arrow weight is around 415 grains. Im shotying the Black Eagle Talons. I find that they both shoot well. Ive had no issues with either spine.

 

[Artemis]

My draw length is a 28.5, bow pulling around 60 to 65lbs. I shoot both the 350 and 300 spine. My arrow weight is around 415 grains. Im shotying the Black Eagle Talons. I find that they both shoot well. Ive had no issues with either spine.

Tradman,

That is great color thanks for your reply. Did you have to make any tuning adjustments going from 350 to 300? I'm going start with the 300 since my BH and inserts give me around 440 grain weight.

 

[tradman]

I havent had to make any tuning adjustments. They both fly about the same. I pretty much hit the same spot on my target using both spines.

 

[dreamingWest]

I use Pinwheel Software to prepare arrow builds. It's always seemed to work well for me. My database doesn't show the Victory HLR arrow, but it seems Easton 5.0 is close. With 125 gr BH, 16 gr insert, standard nock, 8.5 oz vanes, your dynamic spine is calculated at .353; so the 350 would be nearly perfect. Again this assumes what is at the front and back of your arrow, and assumes a 26.5" carbon to carbon.

Bump up to 70# or start going heavier arrow, and the 350 will become weak. So you might want to go 300. But if your components are similar to the above assumptions, and you want to stay at 28", 65#, the 350 is nearly perfect.

ETA: I plan to shoot Sonic 340s with my Mach 30 FDS at 28.25" DL and 65#.

 

[Artemis]

Thanks Tradman, Are you shooting fixed or mechanical heads?

 

[Artemis]

I use Pinwheel Software to prepare arrow builds. It's always seemed to work well for me. My database doesn't show the Victory HLR arrow, but it seems Easton 5.0 is close. With 125 gr BH, 16 gr insert, standard nock, 8.5 oz vanes, your dynamic spine is calculated at .353; so the 350 would be nearly perfect. Again this assumes what is at the front and back of your arrow, and assumes a 26.5" carbon to carbon.

Bump up to 70# or start going heavier arrow, and the 350 will become weak. So you might want to go 300. But if your components are similar to the above assumptions, and you want to stay at 28", 65#, the 350 is nearly perfect.

ETA: I plan to shoot Sonic 340s with my Mach 30 FDS at 28.25" DL and 65#.

Thanks Dreaming, how does a 28" arrow look with 75 grain half out and 100 grain head? I have this components and some 300's already.

 

[tradman]

I am using 100 gr fixed QAD broadheads.

 

[Artemis]

got it appreciate the info very helpful

 

[tradman]

FYI, I have mine cut at 28.5in carbon to carbon.

 

[Artemis]

FYI, I have mine cut at 28.5in carbon to carbon.

Got it thanks

 

[dreamingWest]

Thanks Dreaming, how does a 28" arrow look with 75 grain half out and 100 grain head? I have this components and some 300's already.

Dynamic spine calculates to .320. I still have some assumptions on the back end of the arrow and I'm using 85% let-off, but any other changes there will likely weaken, so at this point, I think 300 spine is definitely your best bet.

 

[Artemis]

Dynamic spine calculates to .320. I still have some assumptions on the back end of the arrow and I'm using 85% let-off, but any other changes there will likely weaken, so at this point, I think 300 spine is definitely your best bet.

got it thanks for running that for me much appreciated