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I am fairly new to reloading but I have pumped out a couple hundred rounds so far with no problem until today. I neck sized some brass from my Gunsite scout cleaned it all up and so on. When I attempted to put the round together ( using hornady .308 die and hornady 165gr interlock soft points) the die shaved a ring of brass off about 1/4 inch down from the top of the neck. I never had this happen so I made another round same thing. After this I decided to make a dummy round and try to chamber it, It was a little ruff going in and then it would not come out I had to push it out with a cleaning rod. Any one know why my die is doing this
 
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What kind of neck die is it ? Is it the Hornady die you mentioned ?

Neck dies, like the lee, use a collet to squeeze the neck back to size. It's like a little round vise clamp, if you will. So, unlike normal resizing dies they have moving parts.

Some times they get dirty and start to seize up and not move as smoothly. Then the collect sometimes does not open properly, if it does not, it can cause that to happen.

It's happened to me with newer dies. You have to take the die apart, clean it, and relube the moving parts. Once' you've done that it should work fine again, unless it's a dud.

These dies will "break in" with use, so you should be able to see metal on metal wear surfaces and figure out where it needs lubrication. I've had to do it a few times. I used Riggs Gun Grease last time and they haven't seized up since.
 
i've had something similar happen when my bullet seating die was lowered too much. basically the bullet holder pushed down on the shoulder and thats why you have that ridge....back it off a bit and see if its still doing it.
 
Pull the retaining pin out and have a look. There's moving parts unlike other dies. As above something may be sticking.

How's your OAL?

I had a look at my Hornady's and the older ones have numbered stems for the different calibers. But the newer(threaded spindle) one I have doesn't. Shot in the dark, but maybe it's the wrong caibered stem?

EDIT Reread your post again. Is your die a neck sizing die? I don't have experience in this, but Hornady lists a different die for neck size. Compare a sized casing to a fired one and a loaded factory one, and see how you come out.
Clint
 
Am I correct in understanding that this happened when you seated the bullet??

If your neck die caused it, you need to do some neck-turning.
 
If you used these dies before and had no problem then it has to be how you set the bullet seater die that is causing the problem. Read the instruction sheet that came with the dies and try again. If your still having a problem call RCBS, they have a good team to help you with problems.
 
It is actually pretty obvious what has happened. You only sized 1/2 your neck when neck sizing, then when you run the case into the seater die, the neck aligning portion in the upper die is smaller diameter than the fired neck size of your case. Hence the shaving. You can solve this easily by sizing the full length of the neck. I have run into this when making 7X57 from 280 Rem brass, different reason but same effect. My 7X57 neck used some of the heavier brass in the 280 shoulder area, giving me a 2 diameter neck. Thin at the mouth but too thick at the shoulder. Had to turn the back half of the necks. In your case you just need to size more of your neck and all will be well.
 
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