UPDATE - I got back at the range this afternoon as the weather improved. There was still some crosswind but not much. Mostly a headwind as to direction.
I shot groups at 40, 50 and 60 yards. From a bench with front bag, rear unsupported. Notice that only one of the groups had any significant vertical. That one shot at 60 yards was a shocker. Imagine being shocked by an extra, measly ONE INCH of vertical with an arrow at 60 yards.
After I get my drops worked out and get into practice mode, I will have to shoot at separate dots for ranges under 70 yards so I don't waste arrows by hitting them in a tight group. Can you even imagine that kind of a problem in archery practice at those distances?
The PSE TAC 15 crossbow is everything that I hoped for in accuracy potential. I will install an anti-cant scope level and an ACI (for uphill/downhill) before I go out again. Since I used various aiming points nothing can be told about drop by viewing these photos. I'll summarize the drop from 20 out to 100 yards at some future point in my testing.
I'll be consulting with Bryan Litz, the Berger Bullets' ballistician, about how to go about estimating a BC from my drops and from chronographed velocity changes. Then I can play around with drop tables generated by a ballistics program in order to correct for altitude and temperature out in the mountains this fall.
I know it sounds crazy to be talking about ballistics programs when shooting an arrow but this PSE TAC 15 is unbelievable. I hope to try for a deer out to 100 yards if the drops and accuracy testing continues to go well as I stretch the target distances.