ORIGINAL: Blodg
Olink, my Allegiance is set at 1 3/4" from the inside of the rest. I had it at 1 7/8" but like insatiable I moved it torward the riser when I bare shaft tested it. I will say my arrows were slightly on the weak side according to SFA. I have since cut almost a full inch off my arrows to bring the spine in line but I have not had a chance to test the tune since then. My arrows are now near the middle of the graph on SFA and TAP. Will be interesting to see where the bare shafts impact now, may test tomorrow.
Also I am currently using a GKF prong rest but it has the micro adjust and I have no problem getting to 1 7/8" center shot. I bought an MZE just to try a drop-away but the bow shoots great using the prong rest.
I tried several arrow spine 340-400, 7595, 3-49 and 3-60 acc and the best flight i had is with the arrow rest setting about 1 3/4 to 1 11/16 from the outside of the riser. My allegiance is a 28 DL set at 60 pounds. I think the 1 7/8 is a starting point and all the allegiance will not be exactly the same it depends on how your holding your bow, i think!