On Christmas Eve morning I was on I-285 in Atlanta, doing 73-74mph in a 55 zone when the V1 gave a laser warning. There was moderate traffic and I was pretty much going with the flow at that point.
After the V1 alerted I glanced around and didn't see anything, but went ahead and tapped the brakes and got down to about 68mph. At that point the the Blinder M27 started alerting to a laser hit. A few seconds later I spotted a cop on the right hand side of the road, parked with his door about halfway open, car facing away from traffic. He was sitting sideways in the seat, and leaning out of the door shooting back down the interstate. He kept shooting me until the M27 shut down on it's own after 7 seconds, at which point I was probably 50 to 75 yards from him.
There were 4 to 5 seconds between the time the V1 started alerting and the M27 kicked in, and there was another couple of seconds after the M27 shut down before I actually passed the cop. Based on my speed, I'd say the V1 alerted to laser scatter at least 1200 feet away. Very impressive.
Edit. I'll also add the V1 is mounted beside the rearview mirror (driver's side) behind a moderately dark tint strip (non-metallic).