Good shooting. I hate it when I make cane arrows, with osage or some other wood inserts for the nocks and then hit one with another arrow and bust it.
I don't shoot at same arrow/spot either but sometimes arrows just have a mind of their own and home in on the nocks or rip feathers off after spending a lot of time splicing solid and barred feathers together for some Purdy arrows.
Side note. I started doing this on my Bamboo backed osage bows I build and then continued using it on all Selfbows I make, and my glass bows.
When making my flemish strings, 99% of the time 14 strands, I use fastflight. When starting the twist for each loop on the ends, I cut 7 stands of B50, 8" long, and lay them along the fast flight at the end where I start the twisting. I blend the B50 into the fast flight while making my loops. It is a little more work and the fingers have to work a little harder to do the twisting. I learned this from a bowyer that used Fastflight on ever bow he made. The 7 strands of B-50 help cushion the loop on the bamboo or glass and create less noise. It also keeps the fastflight from cutting into the back of the bow at the tips, especially if you don't use tip overlays.
Mike