For some reason around here we get a bunch of people that like to use a brass nock above and below the arrow, with the proper gap so not to cause nock pinch, and then use string loop material for a tied in nock below the brass nock. Their release attaches about a half inch or more below the arrows nock.
We also get a bunch of people that are too lazy to paper tune their own bows. No matter how much I explain to them that they are the only ones that can truely tune their own bow.
So I get to do it for them.[&:]
Now you know the scenario on to the real question.

With the above nocking system
and using a drop away rest I find that it is nearly impossible to get an arrow to shoot through paper. Setting up with the standard 1/8th inch nock high produces about a 2 - 3 inch long tail low tear. I have moved rests lower and nocking points up so far that the arrow was actually still touching the riser with the rest in the up position and the bow at rest producing a nocking point that was an inch or more high and still get a nock low tear.
It seems to me that with a nocking system like above at the release the lower portion of the string instantly becomes slack so the string gets snatched downward bringing the rear of the arrow with it. The string snatches the back of arrow downward sevearly enough that the bow
MUST have a fully supporting rest (TM hunter, Whisker bisquit, etc...) to guide the arrow in order to correct this downward snatching of the arrow before it leaves the bow.
Once I put a loop on the bow I usually get a perfect bullet hole with very minor adjustments or none at all.
Any one else that sets up bows regularly see this?