donuts or dough nuts

[holstil]

I've been doin some reading here and now I have some questions. What is the best way to avoid donuts? Now that I have them, what is the best way to remove?
Jim

 

[bozo699]

Jim,
To avoid them you need to turn your necks into your neck/shoulder junction,to remove them you need to ream out your necks.
Wayne

 

[holstil]

I used to run a tight neck and turned my brass like you said. Didn't have donuts, but then again it was a 6.5x284 shehane and didn't have the barrel long enough to find out. Now I run a 284 shehane no turn. I guess I can run a .0005 cleanup into the shoulder a bit?
Or do I have to get all the way into fresh brass all the way around?
Best way to ream the donut out?
Jim

 

[ronemus]

If you use an expander mandrel, it will make the neck ID constant and move the donut to the outside; then you can just turn the neck to remove it. I've found that my necks thicken after a few firings, so I have to turn anyway; better to get two birds with one stone.

 

[bozo699]

That works also.
Wayne.