It appears to also have a contact line about 2/3rds the way down the shoulder? Tough to tell from the pic but there may be some taper above the neck/shoulder contact point. Could be a bit of upper shoulder, could be a thickened lower case neck (since the lower is what was once shoulder prior to being necked up)...hard to say. It might just need she shoulder pushed back a couple thou., too. At this point, it's hard to phone in the answer.
Remove the primer and with a caliper and and a cartridge gauge, measure it. Then tweak the die adjustment a small bit and remeasure. It might get longer before the case shoulder firmly contacts the shoulder area of the die and gets shorter. Go slow, and measure each you adjust the die.
Good shootin' -Al
