I've got that same unit and like it. One thing to watch out for: If you test cast bullet loads, or lubed conicals loads, cut a piece of plexiglas to hang in front of the display end of the chronograph to prevent bullet lube from splattering over it.
I was at a gun club once and a guy a couple of benches down put a .308 round right through the brains of his new chrono.. Pretty hard to do, but it does happen! I heard a couple of swear words that day that I had never heard before or since.
Great pickup and great choice. I've had a Pro Chrono for years to chrono anything from crossbows, compound bows, modern guns and muzzleloaders, and never been unsatisfied. They work great. That said, if you use one indoors to check something like crossbow velocity, be sure the room does NOT have fluorescent lighting. The light cycle of a fluoro bulb will confuse the sensors and give bad readings. Same for other brands of optical chronographs.