I have a T/C omega .50 that I traided a friend for a 17 HMR. It has a nikon omega scope on it. My question is he sighted it in with 250 shockwave ammo and the sabots they come with and only 100 grain of the powder pellets. He said it was accurate at 50 and 100 yards but from what I read the scope is designed for a magnum load of 150gr worth of pellets. I have not got a chance to shoot myself so I have not been able to test this. Does this sound right?