I took the opportunity this afternoon to see how the BulletSeeker would cope with 9mm when attached to the pic rail of my Tanfoglio Match 3. It managed to pick up 99% of shots when shooting in a slow deliberate manner, which is what you want when looking for M/V data. Double taps..............nup didn't like them which was to be expected. I'm glad I got the cone attachment as this protected the sensor from any blast and as you can see from the pictures there's plenty of residue on it. As for use on short range targets @ 7 metres there was no problems as for 10 and 15 metres. The only issue I found was more to do with the pic rail on the Tanfo, the cross grooves are fairly shallow so you need to make sure it's locked in firmly.