So I'm going through a couple of field tests for myself to see if FOB's are going to be right for me. If you don't know what they are, check them out here:
http://www.starrflight.com/index.phpMy first test was basic setup and site in.
Here's what I'm shooting:
Mathews Heli-M
QAD Hunter Drop Away Rest
Tru-Fire Edge FB Release
Spott Hogg Right On-5 Pin
Easton Axis 9.5 GPI with Black FOBs and Stock Easton Blazers Cut 28 Inches
Easton 16g Inserts
125 Grain Field Tips
Stokerizer Stabilizer
Setup was really painless. I just verified that I had the clearance. Made sure my rest was timed correctly and off to the range I went. My first shots with the FOBs were about 12 inches higher then the blazers, groups at 20 yards were negligible with both groups.
After getting my 20 yard pin sighted in, I switched over to the 30 target and this is where I first started noticing the tighter groups. I had a slight (5-7 MPH) cross wind and my groups were noticeably tighter at this distance.
I didn't really shoot beyond thirty yards as I was a little pressed for time.
Something I learned on my first grouping is to NOT group with FOBs

I immediately smoked a FOB and nock with a near robin hood at 20 yards.
Pretty happy with them. But lots of testing still to go.
Also, I have black ones so when I shoot 3D they don't give people a target. But I want to buy some blaze orange ones for hunting.