What’s going on here?

Braise yourself ...

After you have chamfered the mouth, rub it a few times against steel wool to make it perfectly smooth. You can also smear the inside of the neck with molly or Imperial dry neck lube.

aushunter1 said:

Its just to frequent, people trying to do the marathon before they can run a 100m dash

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Your post caught my eye and it made me think of a tribe that run marathons before 100 yard dashes!
Sorry for the crazy side note but check this article out, it is an amazing story of the Tarahumara indians of Mexico. The story far transcends the running aspect and struck me to the core. cheers all

ryanjohnson said:

Reloading some 308 today after reloading about 25 rounds it seemed the bullets taking slightly more force to seat. You can see the shaving from the bullet around the neck of the brass. This is a first for me has anyone seen this before?View attachment 190177

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Did you check brass length? To my old eyes it looks like the brass may have grown long and is being crimped before the bullet is fully seated?

30BR said:

Did you check brass length? To my old eyes it looks like the brass may have grown long and is being crimped before the bullet is gully seated?

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+1 on this one. The shavings are enormous. Something is wrong with the setup of seater die. Back out the die body from the press at least 1/2 turn and re-adjust the seating stem. Check it out and let us hear from you again.

bigedp51 said:

That is very good advice, stop immediately and find and fix the problem. And do not ask questions in forums unless you have thick skin.

I'm glad I started reloading in 1973 after I got out of the military. They didn't have the internet then so you would ask a reloader friend at work that gave you polite answers. If they didn't give you a polite answer you could smack them in the mouth and then find another reloading buddy.

Moral of the story, don't ask questions in forums when the people answering have been locked up with their wife and kids for over a month. Some of the people answering the questions here have gone stir crazy and need hit on the head with a shovel that will leave an impression on their mind.

My friendly advice, buy a VLD tool like below and your case mouths will not be on the "cutting edge".

P.S. Never insult CatShooter and remember to read the book "Revenge Of The Cat" by Claude Balls.

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yes, and thank you for stepping in and bringing us back to civility.

ryanjohnson said:

Reloading some 308 today after reloading about 25 rounds it seemed the bullets taking slightly more force to seat. You can see the shaving from the bullet around the neck of the brass. This is a first for me has anyone seen this before?View attachment 190177

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how about posting a photo of the rounds that didn't have the shavings side by side so we can see the difference.

ryanjohnson said:

Reloading some 308 today after reloading about 25 rounds it seemed the bullets taking slightly more force to seat. You can see the shaving from the bullet around the neck of the brass. This is a first for me has anyone seen this before?View attachment 190177

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Ryan, as others have stated. Make sure you do not have a sharp edge on the case mouth. One additional thing to do when seating a bullet: Do your best to start the bullet parallel with the case. Straight as possible. Then start seating by only pushing the bullet in approx 1/4 of the way, then relax the press handle enough to allow the case to "self align" vertically in the press. Then finish the seating process, to proper length.

I've shot bullets that I used a side cutter to grip and pull from a case...sure I wouldn't want to compete with them, but they sure as heck aren't gonna disappear off the paper and they'll probably still be in the standard deviation of group size in your rifle

You might want to consider getting some pin gauges to make sure inside diameter of your necks are consistent. They can be purchased cheaply at amazon. For my 308, I have "minus" pins in sizes of 0.0355", 0.3060", 0.3065", and 0.3070". Mine are typically loose at 0.3060, a bit tighter at 0.3065, and 0.3070 will not fit.

added: For what it's worth I never had any scraping problem with old fashioned chamfer/debur tool. I load a lot of military brass, I anneal with every load and I am very careful with my brass length - but none of that that should make any difference.

Were all six of these cartridges seated in succession? Or was it random? If you were using a progressive press, I can see where you may not have noticed till the finished rounds feel into the hopper. Regardless, it is best to diagnose the issue at the time it occurs. That way you can examine all the parameters that may be causing the issue. Die position, brass length and neck (OD, ID) diameter etc. What was different between the rounds that were fine and these that had the shavings. Unless we know that, we can only speculate.

From the picture it looks like the brass was tumbled. If it was tumbled, was it tumbled after it was sized and de-burred. The case mouth can get peened from making contact with other cases in the tumbler. Just the other day I was preparing a brass case for my Hornady OAL gauge. I had the case size precisely so the bullet would just slide in and out of the case mouth without resistance. I then tumbled the case before drilling and tapping the base to fit the gauge. After tumbling the bullet would not fit had to be forced into the neck of this piece of brass. Chamfering the case mouth again solved the problem.
Also like was mentioned in another post, polishing the case mouth with steel wool does wonders to prevent shaving of the bullet. I use a nut driver stuffed with coarse steel wool mounted in an electric drill to polish my case mouths. Just a quick push of the case mouth into the spinning steel wool nicely polishes the case mouth.

I apologize if you already mentioned.. But what kind of dies and press are you using?

IMHO time to break the deburring and VLD chafer tools. AND be sure you do both on NEW brass from the Manufacturer.