[longrange1947]

Hollis, not trans sonic, your bullet is doing what the Brits call sleeping. It is what I was talking about above, if I have read your explanation correctly. The round is under spun to make it more accurate at your desired range. Brit Palma rounds are famous for this. The round is rotating around the flight path but not on the flight path, sort of a wobble. The bullet will slowly come back on flight path as the bullet slows and it becomes more gyroscopically stabilized. If a bullet was to go trans sonic while in that condition, the round would really take off due to the turbulence at trans sonic.

On the pressure point, that was for the lighter skinner barrels to prevent barrel whip. That is one of the reasons the SVD has such problems is simple barrel whip, well that and crap QC. The pressure point you can find right at the end of the fore stock in which the barrel rests on that pedestal. The heavier barrels do not have a barrel whip problem so the barrels are free floated. This gives about 17 pounds of up pressure and stabilizes the barrel so the bullet comes out of the barrel at the same point, or there abouts.

craige, how far out, I have shot my AR15 to 600 yards and have watched others shoot it to 1000 yards. The AR platform has really great potential. My OBR in 7.62 will shoot to over 1000 meters with no real problem. I would stay away form the M21/M1A platform unless you like messing around with a weapon keeping it tuned, and that is experience speaking.