Gone through three Shooting Chrony's in the last 20 years or so. Set up takes time, usually at least 15 minutes to take out of the case, set up sky screens, place 9' from the muzzle and align. Have to have the elevation just so. Shoot the skyscreen.
I am loving my Garmin. Turn it on, click on new session, click on appropriate velocity and place on bench beside rifle.
So easy an old fart can do it!
ya!
GWB