Paper tuning question for my Justice/Biscuit
 

After a couple weeks of break in with my new Bowtech Juctice, I decided to shoot it though paper. The rest is a Whisker Biscuit Drop Tine model.

I checked the nock position beforehand, and it was 5/16" above the bottom of the rest. I shot through the paper at 6 feet, and got a 1/2" nock high tear. The Drop Tine really has no vertical adjustment, so I moved the nock point down to 1/4". No change in the tear, no better, no worse.

I then moved the eliminator button up to the nock point, bringing it down to about 1/8". Again, no change in the tear, 1/2" nock high.

Question is, do I move this nock point down further? All adjustments so far did not make a difference.

I read articles stressing the importance of tuning until getting "bullet holes". Should I be satified with this tear?

RE: Paper tuning question for my Justice/Biscuit
 

There are a few suggestions to this problem in eastons tuning guide. Go to www.eastonarchery.com and download their tuning guide. This will help you with many tuning issues. You can print off the whole thing too. I always carry mine when shooting since my memory stinks. Good luck!

RE: Paper tuning question for my Justice/Biscuit
 

MA8191,

Your CE 45/60 spine arrows are probably underspined for a 63# bow.

Your nock high tear will disapear if you add a turn to your lower limb bolt.

Good luck hunting!
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RE: Paper tuning question for my Justice/Biscuit
 

I agree with Arroman. Your arrows are too weak. Nock height on the bow should be around 3/16" high. The Whisker Biscuit can be adjusted up and down. Loosen the mounting bolt and raise or lower the whole rest so it holds the arrow even with the mounting hole. Then loosen the center shot adjustment to set the biscuit parallel to the string. BTW, I rely on group and walk back tuning, rather than paper.

RE: Paper tuning question for my Justice/Biscuit
 

Arroman, pdq,

According to CE's chart, the 4560 is the right arrow at 63#/28". But it is on the borderline. I was considering going to Gold Tip 55/75's just to get it more midrange.

pdq, on the Drop Tine model Biscuit the shaft from the Biscuit to the mounting bracket is square to prevent rotation, rather than round like the original. Because of this, it appears to me that rotating the rest at the mounting bolt will cause the biscuit to not be parallel to the string. The way this version is designed if the top of the bracket is set square, the hole in the biscuit lines up with the mounting holes.

I have had the nock point down at 3/16", and the arrow is definately more square to the string at that point. But the tear was still the same. That's what was confusing me, moving the nock point did not seem to change the tear. I will try it down at 3/16" again.

Thanks for the advice.

RE: Paper tuning question for my Justice/Biscuit
 

MA8191,

On all of the last dozen or so compound bows that I have, the whisker biscuit worked best with the bow set at an even tiller and the arrow nocked at 90degrees to the bowstring.

The high nocking points are not neccessary. All they do is add to the amount of nock pinch going on at the string and add a bit of downward force to the arrow on the rest. There are some rests that need this downward force in order to keep the arrow on the rest but the biscuit isn't one of them.

Any upwards or downwards angle of the arrow on the bowstring can be compensated for by adjusting the tiller of the bow, provided your bow has adjustable limb bolts.

If you want the arrow to fly straight through the center of the biscuit, why would you start the arrow in a nock high fashion anyway?

Good luck hunting!
Don't forget to vote!

RE: Paper tuning question for my Justice/Biscuit
 

Hmmm..arrow spine could be the culprit, but I'm not so sure.. I shot 45/60s out of my Pro 40 dual cam (60 pounds/29") with no issues, but I was shooting vanes and a 27.25" arrow. The Justice doesn't store nearly as much energy, but the nock travel usually requires a stiffer shaft.

An inexpensive test would be to try some 75 grain points, fletch with vanes, or drop bow weight one to two turns and see what happens.... then you can pinpoint a spine problem.