I have two M8 6x42s that need a trip to the repair shop. They both developed rattles.
It was easy to tell when the last one went. I had it on an accurate 243 that really loves the 87 grain Vmax. When 300 yard silhouette "groups" went from pouring round after round into one paint splash on the head tab to barely being able to stay on the torso section it was clear something was amiss.
