Pulling a stuck case

[JScott]

(10-17-2014, 12:56 AM)Highpower Wrote:

(10-16-2014, 10:21 AM)JScott Wrote: For this .270 Winchester so far this has given me cases that are consistently less than .002" of runout at the case neck.

Are you measuring neck thickness variation at all? What kind of average are you getting? Also, are you turning or reaming the case necks before sizing?

My multi-anvil mic says that neck wall thickness in this brass varies less than 0.001".  I don't have a neck reamer for the .270 (or a turner) so these are just factory R-P cases that have been sized and trimmed to length.  I am pretty sure that this rifle wouldn't benefit from neck turning.

The next step is the shooting to see if the ammo sorted by concentricity shows any difference on the target.  I may have to cobble up some wind flags to help me dope out the conditions to help keep things equal.

If you all are interested I can start another thread with more details and results of this experiment.