I recently switched from split finger to 3 under and i am having trouble getting tuned. My arrows are contacting the outside of my shelf and i cant seem to tune it out. Ive went up and down with nock and brace height with now real change. I can shoot the same arrow split finger with no ill effects.. Im shooting a Tomahawk 53# @ 28 and surewood 55-60 spine arrows 29 1/2" with 5" High back shields... Any Ideas?
Generally the nock point needs to be raised when you switch from split to 3 under. The minimum nock point for any of my bows that I shoot 3 under is 5/8". Most of them shoot best around a 3/4" nock point, and a couple like it even higher, around 7/8". If the nock point is too low you will get a bounce off the shelf.
what McDave said
Yeah...it may look ridiculous, but keep moving it up until you get good flight.
Whats odd is my arrow flight is perfect..Ive shot it through paper at 5 and 10 yards with a perfect bullet hole.with my nock at 3/4" it shows nock high but i still get good flight . i still get a tink sound and the mark on my arrow.. I am in the process of building a set of 5# lighter spine arrows and messing with my strike plate.
I am gonna raise the nock higher before i mess with the plate though.