New .223 Lapua case length question

[rhed]

I picked up 500 new .223 Lapua brass. And started to check case length with a Dillon case gauge. They are all consistent. Head is all flush with bottom step of gauge. So is case mouth. Assuming this is ideal length for a AR as I've read and learned. With the calipers, I'm reading any where from 1.750-1.754. Does the thousands #'s matter?

[biglou13]

I'd be more concerned with neck tension than Thousandths length.    The are bigger fish to fry before that will be an issue. 

 

[DWFAN]

Run them through a die to expand the case neck a little, and trim to be consistent length. I wouldn't set the shoulder back any, some Lapua is fairly short to begin with.

 

Then load and shoot.

[rhed]

7 hours ago, DWFAN said:

Run them through a die to expand the case neck a little, and trim to be consistent length. I wouldn't set the shoulder back any, some Lapua is fairly short to begin with.

 

Then load and shoot.

 

Ok. I was gonna just run a VLD deburr tool on the inside jus a bit on the Lyman's express station. And then load. Guess I'll run it through my FL die to expand the neck. I'll be seating Sierra 77 grain TMK bullets through a Forster Micrometer seater die.