Kestrel not needed to start, handy though. As mentioned, there should be people that will let you borrow their chronographs. If you don't have the rifle and bullet profiles built in whatever ballistic solver too you have for your phone ask around if someone has a few minutes to give you assistance with getting it up.
MV changes with the temp and weather so when adding in the previously attained MV number if you also knew approximately the temp it would help for calibration.
MV changes with the temp and weather so when adding in the previously attained MV number if you also knew approximately the temp it would help for calibration.