ORIGINAL: Paul L Mohr
It has more to do with your arrow than the bow. In order to get your field tipped arrows to hit the same as your fixed blade arrows you need to be pretty close on spine. If not you will play heck trying to get them close and will most likely actually throw your tune off trying to do it.
ABSOLUTELY!
I'm no expert, but I've absorbed a lot since I started shooting back in March last year... both from experience and the gurus on here.
When I got my Drenalin in March, my shop owner set me up with GT 5575s (.400" deflection) for a 70#, 29" draw with 100 grain points. It shot great, and I got pretty decent with the fieldpoints. When I finally tried broadheads (G5 Montecs)around July, it was like a bad dream. Always low left, sometimes more than othersand sometimes missing the block target altogether at 30 yards. I bought an arrow spinner and aligned the broadheads perfectly with no significant improvement. Finally, with the help of TFOX and the Goldtip selection chart, I found out that the 5575's were underspined. I bought a dozen 7595s in(.300" deflection) and that fixed everything. FPs and Montecs fly the same PROVIDED my form is good and consistent.
Not saying that's your problem, but it sounds like it. If you're shooting vanes and you had a contact issue, I think you'd already know it, especiallyshooting broadheads.