So this may be a dumb question but I have been looking around at various forums about 45-70 loads and how at some point the higher muzzle velocity translates into less penetration, specifically, it was stated that above 1650MV you see reduced penetration. It would seem to me that penetration would be more affected by the velocity at point of impact rather than muzzle velocity. Velocity can be calculated across the flight path of the projectile so if the MV is say 1900FPS but at 200 yards it is 1300FPS, wouldn't the penetration at 200yards be based upon the POI velocity and not the Muzzle Velocity?