Thanks everyone for the feed back. I had a quick chance to shoot a couple dozen arrows in between items on the honey-do list today. Moving the nock point down sorted out the difference in the up/down point of impact. It also gave me some room to play with the sight - its no longer bottomed out. After the change field points were hitting about 3 inches higher at 20 yards and the broad heads were right with them.
After some more practice I noticed that the broad heads are consistently a bit more than 1 inch right of the field points. When I backed off to 30 yards field points were consistently hitting a little left of my point of aim by about an inch.
I'll read up on whats it could be - any ideas here? Great advice so far, thanks everyone for the help!
BMD
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