Hi Everyone,
I'm trying to work up some loads for my 16" Grendel (264 LBC chamber, actually).
I was using once fired Hornady brassed, full length sized. Loads were built with CCI 450, Nosler 123 CC and 8208 XBR. I was working up from 26 to 28.1 grains in .3 grain increments. At 27.5 and 27.8 I had 3 cartridges (below) that show a mark on the shoulder.
IMG_0257.JPG
The primers are fine, perhaps very mild flattening if at all.
Anyone seen this before?
I'm trying to work up some loads for my 16" Grendel (264 LBC chamber, actually).
I was using once fired Hornady brassed, full length sized. Loads were built with CCI 450, Nosler 123 CC and 8208 XBR. I was working up from 26 to 28.1 grains in .3 grain increments. At 27.5 and 27.8 I had 3 cartridges (below) that show a mark on the shoulder.
IMG_0257.JPG
The primers are fine, perhaps very mild flattening if at all.
Anyone seen this before?
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