Time for the bin?

Newbie question time, is it time to bin this brass? Was just prepping this tonight and noticed it on a few of my 4 to 5 x fired brass ,no annealing, fired in my 22-250
Attachment 139560

what lube and how much are you using has that been sized

Not yet sized, RCBS lube that came with my rockchucker kit. I roll on the pad and then wipe some around the neck with my finger tip. Try to keep off the shoulder

Ok haven't seen that before looked a bit like a lube dent I'd try sizing it and see if it splits

could also be something stuck in the chamber........

What he said ^^

That's what I was thinking as well but thought youd see a mark where it had been dragged across it chambering and extracting it but check and clean it

Some had it in more than one spot around the neck and different sizes of dent. I'll size some and see how they come out.
The worst one I found late last night was split.
Attachment 139567

If it were a chunk of crud in the neck portion of the chamber, they'd all look much the same. Weird alright.

So the necks looked perfectly normal before you fired them?

Check the inside of your sizing die as well as your riflechamber. I had an issue similar and it turned out to be a compresed thread of cleaning cloth jammed against the wall.

Yup, pretty sure it will be cotton thread as have had exactly the same thing happened to me with the same symptoms. The thread shifts around in the chamber, which is why the dents are not consistent. Any brass that is not split but has just a small dent, will re-form to the chamber next time you fire it and you will not even be able to see where the dent was.

Before sizing
Attachment 139594
After sizing
Attachment 139595

Think I'll just bin them, given they've seen some action

@charliehorse, any reason you don't anneal at least just the necks?

Even a candle flame will significantly de-stress the brass.

I've taken to just stand the cases up in lines on my small lathe bed (heat sink for the bases) and move a blowtorch across them, 5 secs each to the base of the neck. Very quickly done.

No particular reason @Cordite still new to the game, its on the list at some stage though

Apart from the split neck (throw away) i would and do continue to reload cases with small blemishes like those.

sure it wasnt there when it was new... iv seen brass or rounds from the factory like that.

As @Flyblown stated I too would say that there was one or two pieces of cotton off of a cleaning patch lodged in the neck area of your chamber.
I had the same thing happen with a new Steyr .223 rifle with the very first shot after cleaning the factory grease out of the barrel. On inspecting the fired case there was a 30mm long groove up the side of the case. Looking in the chamber I could see a single thread of cotton. Once removed there were no more grooves. The next time I fired that case the groove fire formed out.

@Dicko is that for 22-250? Maybe I'm just paranoid but its cranking out some pace/pressure. @bully yep 99% sure, I check em all before I reload.
Gun gets cleaned regularly and has been cleaned since some of those brass were fired. Fired some yesterday and threw them in the jar with the rest and then checked them last night so they may well be from the other week. Will check the 2 rounds I fired this morning and see if they have them. Pull apart me die and have a look also

Charlie,

I’d keep using them in any caliber. It’s the neck. It only holds the projectile and is full supported.

Lube dents, or dents in general normally just pop out in the next firing. Would be good to know whats causing it though.

Have checked die, seemed okay. Check chamber tomorrow. Prepped some brass and will load up some clean ones, fire and check necks.

Its caused by lack of annealing. I see it a bit with my 22-250, some cases are split in the neck and some show like yours.

Husky, you maybe right, my experience is lack of annealing show up in cracks in the necks at firing, different neck tension in batches resulting in poor groups and stiffness / stickiness of the case during FL sizing when your trying to get the expander ball / mandrel our of the neck on the upstroke. The deformations here i think is more from having lube or oil, cotton etc in the chamber at firing but again hard to tell without seeing / knowing the whole picture.