This one’s for Don and the other folks out there scratching their heads about neck tension and how it applies to reloading. To put it simply, neck tension is how tight the neck is holding the bullet from slipping forward into the rifling as pressure builds in the case when fired. Instead of being measured with physics terms like friction and force, it’s typically referred to in thousandths of an inch. How does all that apply to your hand loading practices, though? Does it matter at all? Should you be annealing? We’re going to cover all of it in this article on the merits of neck tension!