Latest Precision mag Article

[Vern]

Good grouper as I remember the video he said he saw a good diff in aggs by doing so.
You can watch the videos on youtube and he will explain it there.

 

[David Halblom]

I read the PS article a couple times and the posts here and then crunched some numbers and it looks like .002-3" neck clearance on the loaded rounds and the bushing is .003" less than the loaded neck diameter. I believe the point about trimming for length in the article is uniform length and not necessarily the shortest length, unless you have to go minimum to get all the cases the same length. Thin to win; is that because thin gives more neck clearance or less tension, assuming that all necks are turned to 100% equal thickness. Is it more clearance or less tension that allows a jammed bullet to self align? How about annealed vs. non-annealed with all else being equal? - nhk

it is because it is the most controllable dimension. N-133 likes more tension, but it MUST be consistant. The thinner necks do not change their tension as fast as thicker necks. And neck length is a CONSISTENCY issue. As long as they are all the same length, they will have the same tension on the bullet if they are shot teh same number of times