They were beta testing the prototype at Best of the West shooting range when I first encountered one. They'd put them on one steel target at 500 yds and another at 1000 yds. First time I hit it and it flashed red I'd thought I'd started a fire.
But quickly figured out that it was some kind of red flashy thing.
Not long after that when talking to the tech at the Magnetospeed factory here in Austin, he asked where I shoot and then told me about a new product he was testing, and as it turned out I gave him his first field report on how it was working.
It's triggered by acoustics, so he was pleased that I was shooting a 223 and triggering it reliably. The biggest challenge he had was making it visible yet not likely to get shot off.
Make sure you clean the steel really good with acetone or something, let it dry. Attach the velcro to the steel and let it cure for 24+ hours it you can. The only problems we ever had was the velcro adhesive falling off the plate.
