Yep, most likely blast readings from other guns and even sometimes your own. I owned a Chrony once that sucked. One out of every ten was maybe a good reading. Best shot I ever took at it was the one that destroyed it, lol.
You just need to play with it more and find out what it likes. Most of those cheaper chronographs work best without the sun shades up in complete shade. Like under a tree. You can try different types of scenarios in your backyard with a BB gun or airsoft gun. Mine would read BB's perfectly in my backyard under the shade of a tree.
After I shot my Chrony I upgraded to an Oehler. Never misses a shot. But for the price difference a Chrony's not such a bad deal once you figure it out.
Originally Posted by Oceanbob
Get a DILLON...