No, even with just rodding you can see some barrels bit much deeper than others.
One thing that does need to have care taken is collecting a shot pellet. If there's a rapid deceleration the tail can bunch towards the head which can lead to the assumption that the skirt is being blown out. Collection much further down range, when the pellet is falling natually doesn't display it. Even at 55yds pellets will deform on impact, they're still travelling at 600 fps. However toothing is deeper on a full power shot pellet than on a not shot.
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep