Donuts on No-Neck-Turned Brass!

[243Mendoza]

I have Norma 6.5-284 brass that have not been neck turned but have donuts, i.e. the bullet will not drop through the neck of fired brass. Have other people experienced this with unturned neck brass?

 

[308sako]

I have just started working with a 6.5/284 Norma and the Hornady brass I have when fired the bullet will not enter the neck. I have found that turning .004" off the case necks loaded diameter has made life better.

Donuts of course is a slightly different issue.

 

[tenring]

You can ream it out, but if the base of your bullet does not contact it, it is not necessary to do anything, it will be no problem.

 

[mikecr]

Donuts aren't caused by neck turning.
Let me predict FL sizing

 

[fdshuster]

Yes. I have brass that has never seen my Sinclair neck turner, but donuts have formed.

I have the depth of each bullet as seated, recorded that will contact the donut. As long as I'm seated forward of that dimension, I don't care about the donuts.

Only if the seated bullet(s) make contact ( a zero freebore throat with a long, flat base bullet) do I remove them.

 

[fguffey]

Do-nuts, I make do-nuts, when forming brass do-nuts form at the shoulder/neck juncture on the inside, I remove do-nuts, when the hot high pressure metal cutting gas escapes out of the case the gas must get past the do-nut, when the hot high pressure metal cutting gas escapes I do not want anything to slow the gas down, I believe the worst place to build an orifice for control flow is at the shoulder/neck juncture. I have two methods for making do-nuts at the shoulder/neck juncture, others have a third method.

F. Guffey

 

[jo191145]

Do-nuts, I make do-nuts, when forming brass do-nuts form at the shoulder/neck juncture on the inside, I remove do-nuts, when the hot high pressure metal cutting gas escapes out of the case the gas must get past the do-nut, when the hot high pressure metal cutting gas escapes I do not want anything to slow the gas down, I believe the worst place to build an orifice for control flow is at the shoulder/neck juncture. I have two methods for making do-nuts at the shoulder/neck juncture, others have a third method.

F. Guffey

I make muffins.
My Blunderbuss has an extremely short barrel.

 

[fguffey]

Steve ask:

I have Norma 6.5-284 brass that have not been neck turned but have donuts, i.e. the bullet will not drop through the neck of fired brass. Have other people experienced this with unturned neck brass?

jo 1911 45 said:

I make muffins.
My Blunderbuss has an extremely short barrel.

And I say, a better an answer for STEVE would have have been:

Steve, turning the neck and do-nuts inside the neck at the shoulder/neck juncture is not related.

F. Guffey

 

[fpskills]

Are you trimming??
The reason I ask is I shoot a 6.5x47 Lapua no turn neck and I started to get donuts at around 5 to 6 firings. I neck size and bump the shoulder somewhere around .001 to .002 but I neglected to check overall length because my bolt was closing, so I thought every thing was good...
I decided to check my brass dimensions and of course the first thing I checked was the OAL and it was too long,( I can't remember by how much but enough to trim).
After that all was good and I now pay more attention to it and no donuts..lesson learned.


Adam

 

[bigedp51]

Do-nuts, I make do-nuts, when forming brass do-nuts form at the shoulder/neck juncture on the inside, I remove do-nuts, when the hot high pressure metal cutting gas escapes out of the case the gas must get past the do-nut, when the hot high pressure metal cutting gas escapes I do not want anything to slow the gas down, I believe the worst place to build an orifice for control flow is at the shoulder/neck juncture. I have two methods for making do-nuts at the shoulder/neck juncture, others have a third method.

F. Guffey

I make muffins.
My Blunderbuss has an extremely short barrel.

Thats worth a big 10 pointer jo191145. ;D

The real question is if fguffey is putting medicinal marijuana in his muffins, then eating the magic muffins and then posting here about "do-nuts". ???

Or could fguffey be putting medicinal marijuana in his do-nuts.