Thanks dluders, I really appreciate it.
About the only thing I would change on your conditions would be the altitude. We are at 95'(yes 095') above sea level.
I don't know how much difference this would make.
Vance in AK.
Attached is my rendition of the simulation file for the Super Big Bertha Kit, Estes No. 2018. Note, I did not find this one in the EMRR library or at Jim Z's site. It was done using RockSim version 5 so you can open and modify it using the demo version of the software available from the Apogee website. I am not sure how this kit looks on the inside and the exact fin shape and body tube lengths. If you have the details and post them here I will create a more accurate file.