Here's a target at 10 yards: Looks like nothing special - it's what happens when someone jerks the trigger, right? But nope. Here's what really happens: The shots are taken from a rest, slow fire. First shots are very close to the POA. Ignore the windage being off, it's the rear sight. However, as the magazine is getting drained, the center of the hits starts creeping down, towards the area marked with "15". Total size of the drift appears to be about 3.5". If I let the gun "rest", then it returns to hitting the POA. Seems like something heat related, then. Anyone has any idea what is going on? I know that an M16 barrel can do something like this as it heats up, but it does the same drift amount at 100 yards, not 10 yards. This drift is much too large for uneven stress bending the barrel. So, what is it?