Recently I ordered, from my bow's maker, a second set of "fast-flight" strings, identical to those I purchased from him a couple of seasons ago. That set worked well with 200-210 grains up front.
When the new strings arrived, I set them up the same, although with musk-ox wool silencers instead of sheep wool. Shot the same arrows, and they consistently shot as under-spined. I had to back off to 125 grains to obtain good flight.
The new silencers were advertised to be lighter than the originals, but I did not think the difference was enough to explain the results. So I called the bowyer, and he allowed that he had substituted a spectra-fiber string material, as he was unable to get the kevlar material anymore, and that he had not been aware that it would make a difference.
End result for me---new arrow shafts --heavier, tougher, quieter, with better FOC--and a big VISA balance.
Just thought folks should be aware.
Topic: Kevlar and Spectra---not the same. (Read 289 times)
