ORIGINAL: GMMAT
IMO (speaking strictly compound bows)....It makes a difference if:
1. You're UNDERspined and shooting FP's/BH's.
2. You're over/underspined and shooting BH's.
FP's and overspined.....no problem.
Mech.'s and overspined.....no problem.
I've shot ridiculously overspined arrows and mechanicals with no issues at eastern hunting distances (out of a compound).
Overspined makes a difference regardless of what the arrow is tipped with,just not as much difference as underspined.
You WILL NOT see a 70 meter compound person shooting grossly overspined arrows that are competitive in world competition.Even pro indoor spot shooters will increase point weight to get the dynamic spine on their oversppined arrows to within an acceptable range.
The grossly overspined arrow can cause forgiveness issues and even penetration issues,dependant upon which way the bow is tuned.