Variable Pellet Relief (VR)
Variable
relief: The rows on the outside of the die do not
pellet as effectively as the center rows of a pellet die,
as the feed tends to escape from the sides. This can result
in uneven wear on the die. A solution to this is using a variable
relief on the pellet die, where the outer rows of holes are
made deeper, thus encouraging the pellets evenly across the
die.