Spike Camp

High pressure 257 WBY factory loads?

High pressure 257 WBY factory loads?
« on: October 16, 2007, 09:43:04 AM »
I recently had an odd experience with a box of 87 gr PT-EX 257 WBY factory loads. Nearly all of these rounds when fired would come out with the brass flowed into the ejector hole. This ammo was approximately 7 years old.

I chronographed a couple of the loads and got 3675 FPS average out of my Mk V Sporter, which I didn't find excessive for this bullet considering its listed velocity.

Is anyone here at Weatherby aware of a particular lot of soft brass from a few years ago? I resized the brass and primed it only to find that the pockets are excessively loose and accordingly unusable for loading.