Yeah, like I said, my luck with chronographs makes your suggestion sound. Just posting the numbers for an FYI. Was interesting to see that the PSE with the radical cams shot that much faster than my Hoyt at 82 lbs. Hoyt shot the 815 gr at 214 fps. Waiting for the guys to get their other chrono back (being fixed). Will shoot again and see.............Perhaps they should just eyeball it and guess the speed for you.
If it is shooting 233 repeatedly then use that number and do your calculations.
I think you might be a little light for chasing something with thick grey hide. IMHO.