[EHartkopf]

I am shooting a CD WF 25x with 38# UUkha limbs. My previous arrows were 500 spine, 30 inches with 120 grain points and flew very well. I was looking to see the impact of small diameter shafts, so I purchased identical arrows, except that they were 3.2mm shafts. These arrows are flying extremely weak and it seems like the adjustments I am making such are decreasing poundage, adjusting center shot etc. are making the problem worse. Any advice?

 

[bbtradlb]

You may need to change the rest location to make sure the skinny arrow sits correctly against the plunger and may need to adjust your nock point as well.

 

[woof156]

You may need to change the rest location to make sure the skinny arrow sits correctly against the plunger and may need to adjust your nock point as well.

This ^^^^and are the arrows the same length, and I assume the same spine, you may have to reduce the plunger spring tension and maybe lighten the point wts too. I assume you tested this with bareshaft of the same arrows. It is the devil in the details that gets us all....

 

[EHartkopf]

The arrows are identical in every single way besides diameter. I will continue working on it and let you know what works

 

[c_m_shooter]

Back to basics. Put a matchstick in the plunger adjust until bareshafts come to center. Then put the spring back in and do a walkback tune.

 

[EHartkopf]

Problem solved! I reset all my setting to the basics, started from scratch and I quickly got a solid tune. I believe that I was getting a false positive.