I have a Martin Hunter 45# I have had a problem with a slapping noise at the shot, wear on the shelf was on the outside edge, I tried every arrow combo I could think of and ended up with Axis 500 cut to 29.5 with 100 grain brass inserts, 125 points, still couldn't get rid of the slapping noise.
I just on a fluk changed the factory string to a Three Rivers fast flight plus.
Hers my quetion, the noise went away, my arrows are flying like darts and it shoots 400 with the same set up good also.
Why did the noise stop and why have I never seen this suggested on any site.