About a month ago, I decided to try a QAD Ultra Rest (Hunter) on my Hoyt ProTec. It had a Whisker Biscuit on it and the bow was perfectly tuned - so I measured the distance from the center of the arrow to the bottom of the shelf, and also to the side of the shelf - so I could put the drop away rest in exactly the same position. After installation, the bow was still perfectly tuned and the sights were off only 1/2" at 25 yards.

Today, I got another QAD Ultra Rest Hunter and installed it on my Reflex bow. It also had a Whisker Biscuit on it and was perfectly tuned. After taking the same measurements, I installed the Ultra Rest and adjusted it to the same position as well. After installation, the bow was hitting about 7" low at 20 yards. I checked the tune, and it was still right on. So I wound up adjusting the sights. But I'm really puzzled at to why the Hoyt, with the rest in the same position as the WB, shot the same - and the Reflex would print so much differently. Any thoughts?

A little off can be alot downrange,maybe you didn't get it EXACT.

Check the broadheads to the field points to see.


Your nock travel might be an issue in this as well.

Fixed BH's and field points are hitting the same, as they were before. And the measurements were taken with a Starret micrometer. I'm really stumped on this one - even though I got where I wanted to be with this setup

What would nock travel have to do with all this where the only variable is the difference in the rests? Thx.

Nock travel has alot to do with tunability and how easy it is.The arrow may have been getting bounced around inside the buiscut and you might not have had as good a tune as you thought.

This very well could be. It has a consistency now that wasn't there before. In fact I was shootingsome differentarrows this afternoon, that varied from 380 to 520 grains - all were hitting "minute of apple" at 20 yards, using the 20 yard pin. Not going back to the WB.

Mike - are you talking about thesame sort of nock travelissues that Arthur P. was describing in the tiller tuning post?

I agree that it was proably a nock travel issue that the WB mitigated or hid. Single cams are notorious for an arrow path that is not in a straight line as the string goes through the firing cycle. As the cam picks up the string during the cycle it either lifts or pulls the nock point out of a straight line path. Different cams do it to varying degrees.

Just to clarify, the Reflex bow is one of the new dual cam designs - very similar to the Hoyt Vetrix.

Key word being SIMILAR

Agreed . . . I shot them both and, for a back up bow, couldn't justify $300 more for just a little bit better bow. Then I shot the new General [8D], and started wondering if I really didn't need a new primary bow.

The biscut would have force the fletch to exit the bow in the same place every time. The drop will not. The drop just showed that they was a "problem". You could also have/are getting contact with the new drop.