If you follow Leon's Test Procedures, you can quickly test and see where it falls in at, I would be redudant in performing the test procedure.......as in if you do a turn at sealevel ( say 50 ft or 100 ft off the deck, use 25% fuel, no stall limiter / no rudder input )...also try it turning left direction, and try it turning right direction.......
remember doing these test is time consuming, and takes awhile to learn how to gain the very best most accurate turn rate/turn speed.......
what I am trying to say is.......instead of doing just 1test of 5 turns deviding total time by 5, do this test 3 times or 5 times complete.and compare each completed 5 turn test...and see if you are being consistent........
you could take everyone in this particular thread .....all performing the exaCT SAME TEST ON THE SAME PLANE WITH SAME LOADOUT, AND WOULD BE LUCKY IF ONLY 2 OUT OF THE GROUP CAME CLOSE WITHIN 1% OF EACH OTHER WITH THE SAME TEST RESULTS. ( CRAP---sorry for the caps lock accidently )
until one becomes proficient with testing on a regular basis, and are able to put out test data to the public which others will test and compare to see how close/spot on you are.......then most will not look at your test data with very much appreciation........so don't get discouraged.most well known and reliable test data/AC performance data providers have been doing this for many years ( 10+ years ).and have been scrutinized by the community and have earned the community's respect by offering very detailed accurate information.......
you will not just be able to step into that particular group until you have proven yourself worthy of being able to offer consistent and accurate information.......
with Leon's ( Badboy's BootStrap Calculator and Test PRocedures PDF file/Instructions )...with enough patience & Practice.....and with others picking thru your results to verify....YOU MIGHT BECOME another reliable source of this type of information.......
just a friendly suggestion for those who wish to help contribute to the community......