Guys, I am trying to get going on a new 280 ackley I just had built, last night I was getting my new dies close in anticipation of reloading tonight, what I came across is this. Redding 3 die comp set. It appears the necks on my Nosler brass in this chambering are really long, like longer thatn the bushing I am using. I know most guys only neck size the portion of the neck that will their bullets will be seated in. I sized one before retiring for the night and can't get down to the shoulder, the neck is going up throught the bushing and hitting the bushing pusher before getting deep enough to get down to the shoulder. My neck on this rifle is .313, the portion of the neck getting resized is getting down to .306, and the unsized portion is .310 or so, leaving a donut. What are you thoughts? I will be reloading Barnes ttsx at .05 off lands, without doing the math I think the bullet will not be seated deep enough to be in the unsized portion of the neck, but I have never dealt with donuts like this. What should I do? Plus I was going to trim brass after neck sizing, most of the new brass is about .013 longer than my smith recomended to trim to, and once fired brass is grew .003 in length.