Author Topic: Arrow spine question? (Read 330 times)

dixiearcher · « **on:** October 26, 2016, 10:20:00 PM »

So I have the opportunity to pick up some POC shafts but was curious about the spine. I shoot a Black Widow PMA 45# at 28" which I draw to 27". These shafts spine at 40-41# full length. If I cut them to 27 3/4" BOP and used 125 gr. heads, could I get decent / safe arrow flight or would they be underspined no matter what I do? Never shot POC but would love to make some up. Thanks

Matty · « **Reply #1 on:** October 26, 2016, 10:22:00 PM »

Those might be a touch weak...

Orion · « **Reply #2 on:** October 26, 2016, 10:29:00 PM »

Yep. Too light.

dixiearcher · « **Reply #3 on:** October 26, 2016, 10:31:00 PM »

That's what I was afraid of. I will just have to order a set of 45-50 sure woods or POC. Thanks for the replies

Fletcher · « **Reply #4 on:** October 26, 2016, 10:37:00 PM »

For a PMA, I suggest adding 15 lbs to your draw weight for a 125 point and 28" BOP. 55-59 lb spine.

dixiearcher · « **Reply #5 on:** October 27, 2016, 01:03:00 PM »

Why 15 lbs if you don't mind me asking? The three rivers calculator shows an almost perfect match at 47# with that set up. I am shooting 50-55 ramin shafts that I had made for another bow with 145 up front and they are way too stiff. They are also really heavy though...