Originally Posted by Bishop
*edit* Never mind answer is in another post earlier in the thread sorry.
Got my die and lapua brass in. Do i just seat a .308 bullet into a case and measure the OD of the neck to determine my bushing size?
Is it as simple as that?
I have lee collet dies in some other calibers trickymissfit I am going to full length size for this gun though every time.
I am hoping to send my die off to redding along with the reamer print once I have some fire formed cases and let them hone my die to match my chamber. If they will even do that i know i read somewhere that other die makers do.
I like the Forster full length die better than the other brands, as the necks seem a little more concentric. Have never seen a full length die that used bushings, that worked as well as claimed it would.
As for the bushing size, do it this way: measure the neck wall thickness and multiply it times two. Then measure the bullet O.D., and add the two sums together. I'd start by subtracting .003". This will give you your correct bushing size for .003" bullet grip. Some folks like .004", and others like .002". To get something like .0035", you'll have to shave .0005" off the neck diameter. A caliper is not accurate enough to measure the neck wall thickness, and you really need a pin micrometer to do this. Another way is to get the Sinclair case micrometer. This is the way I do it.