More like, "What's up here?" These are from the lower grain loads (63gr) of RL-19 driving Speer 130gr BTSP's set at 2.875 COL, in .270wsm.
The brass, Federal Factory 5th time resized and fired(FL sized only),
Looks like gas blowing back? On the first pic you may be able to see the amt of black right at the head? A fair amt, is this OK?
Possibly the COL 2.875 is further out than I have set them in the past? Bullet was set in deeper than it's width tho, (about .30 into neck)
Still well short of the Lands (2.99) Everything else about the brass was pretty dialed in as far as case prep, not annealed yet (?) no signs of cracks in necks, no signs of excess pressure, I fired rounds up to 66gr (w/same COL)and this didn't show except in 63&64gr loads?? Fired some factory rounds also with no sign of this, these were the first through a cold, clean, & dry barrel
Those are just powder marks that rub off easy, case looks fine after wiping down,
but seems like a sign of something wierd?
I'm not sure but it seemed these were marked like this on the top as it came out of the chamber, and it's only on the one side.
Also possibly I am not FL sizing back enough? (only setting datum line back .001 on Hdsdpce gauge) Chambered in and out easy though