Well I'm lucky there. I bought my gun out of the Paris showroom and it went to London for a once over before being sent to NY. While in London they regulated the sights for the factory ammo. I have verified the 50yd and 100yd leaves shoot to point of aim at the corresponding distances. I haven't tried the 150yd leaf at 150yds though. I think 150yds with these guns is possible but not practicable. The problem is not that the bullet would be "spent" by 150yds but that it would be difficult to hit a target at that range using the sights on the gun.