The 29" I drew back felt a lot longer than my 29" Pat. And that's with shooting the SB off the string and the Pat off a loop.

Shooting a 29", 67 lbs switchback with a 415 grain arrow at 292 fps.

We finally got to check the arrow weight and it was 525gr. not 550gr.
The bow is set at 62lbs and is shooting the 525gr. arrow thru the chronogragh at 245fps!
Thats with a 80% let off and 28inch draw!
Pretty good speed for that heavy of an arrow at that draw length and weight!!!

and all chronographs are equal?

I dont know how accurate the chrono we are using is......I do know its telling me my 3-D bow is shooting 285fps and Iv shot it thru several other chronographs that are giving me the same speed!