Ah, I asked because the 10mm is supposed to have a pretty big muzzle flash. Sort of off topic, I've got a box of the Double Tap 200gr LGC loads on the way. They are advertised at 1300fps out of a 4.6" barrel, I'm interested to get them over a chronograph to see what they really do. If they are even close to advertised, and if they feed well, they will make a good round for woods carry (my benchamrk is crossing paths with a cranky black bear).