Is there some common number of fire, size/resize cycles that it takes to produce donuts or is it like adult diapers and depends? How detrimental to accuracy is seating a bullet into the donut area?
Doughnuts inside case neck
- Thread starter josebd
- Start date
Is there some common number of fire, size/resize cycles that it takes to produce donuts or is it like adult diapers and depends? How detrimental to accuracy is seating a bullet into the donut area?
cycles would vary with case geometry and charge weights.
if you use a bushing die pushing the donut to the inside of the neck seating into the donut would be problematic. if sizing with an expander ball or mandrel if the donut was small you may never notice it.
simple to get rid of. use an expander mandrel to move it to the outside and turn your necks.
So im interested what is your process and what are the critical steps. I keep hearing about having a solid process, but i would love to know what that really means. I dont have all that much experience but im old enough to know my parents were not full of crap and to learn from those that have the knowledge
Awesome!Bettlejuice!
Thanks. In checking a few cases including some .243 Win fired a couple times I don't see anything to be concerned about yet.
Seems like an opportunity for an enterprising soul to devise an attachment for the top of a press that lets one ream out the inside of a case neck while it's still in the die/bushing.
I wish people would explain how they do this magic. I was trying to be fair and ask. I have no reason to doubt their process if i have no idea what it is. The problem i run into is those people who make these claims will not share their process. Seems like a deal breaker to me...LOL,
"brass flows forward... " and blahh and blahhh and blahhhhh.....
Except that mine
just
DON'T
Nuff Said
So that was a pretty long tirade where the link to the data would have been way more useful and even appreciated. At worst I might have decided the system wasn't going to work for me. I see that you have encountered some crappy people, and there will always be more but that's not my game. I am hear to learn and understand. If I can be humble enough to earn submarine dolphins and intelligent enough for an understanding on nuclear power I'm sure we could figure this out.
J F Johannes
AKA "RatRifle"
Here you go AJC, this should spin your head around a little.
http://forum.accurateshooter.com/th...-it-shorten-brass-life.3952267/#post-37223479
How is that a copout. He asked for your steps. I understand that repeating something over and over is a pain but the solution is to just post a link to the first time you explained it...
GSPV
A failure to plan is a plan for failure.
Jim Carstensen does this in his 22 PPC short form die.
Interesting link. He speaks kind of abstract and I have a hard time following. It also seems as though he perpetuates his own defence while I have not seen any attacks. In the end I feel like he may have some good information but I dont know how to get to it. The comment about only neck sizing before sending in cases to have a die made got me thinking and maybe more confused. Should one do this to make sure the case fills the chamber, resulting in a die that works the brass the least.
Well, I don't think we need to debate about how or when brass flows...it does flow...and forward. Everybody has to size their brass and everyone has to trim it and everyone will get donuts sooner or later. If you want to mitigate or prevent donuts, then use a neck turning tool with a cutter to match your shoulder angle Then, cut a healthy amount out of the neck/shoulder junction. With proper cutter, this virtually eliminates the donut issue without causing any neck separations. I never had a neck separate doing this and the donut problem is gone for....the life of the brass. 
Or, you could just use no-turn brass and get your freebore such that the bullet is never close to the donut. That would be the way to solve this problem with a lot less work! We use about .250 FB on our 284s and it works like a charm. Have converted a bunch of people over to the dark side (no-turn) and they have been very pleased (and surprised) with the results.
Or, you could just use no-turn brass and get your freebore such that the bullet is never close to the donut. That would be the way to solve this problem with a lot less work! We use about .250 FB on our 284s and it works like a charm. Have converted a bunch of people over to the dark side (no-turn) and they have been very pleased (and surprised) with the results.As I said....
lotsa' pigeons on the chessboard now josebd.... best of luck sorting thru the feces
If you can’t put a new bullet in a Fired case you have a donut
Donnie Time for you and your group to have a get together at the IBS in Florida
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