I have the Forster Bench Rest Ultra Micrometer Seater Die for my 7 mm rem mag. I use 162 gr A-max. I realize that bullets will vary some measuring from the ogive, but too many times when I go to seat the bullet, the die will not move the bullet at all. Say I want to move the bullet .005 to get to the correct depth. I dial the micrometer and it doesn't seat the bullet the .005 nor does it move the bullet period. I adjust the micrometer again say .003 and then it may seat the bullet .008. Does this mean that I have a bad spring or what?