Which way does bushing go in???

[varget204]

RCBS & Hornady recommend,if #'s are across bushing,insert as you would read size, if on top of bushing #'s on top.I have a comp neck Redding,#'s down

 

[Tim s]

The numbers go up, if you want marginally smaller turn it over, there is about a 1/2 tenth of taper, at least in the nitrided ones.

 

[Uncle Ed]

Thats not a very versatile solution. Its one thatll end up in a stack and will be in a picture posted here of marginal dies someday. One in ten will work ok with one lot of brass.

Bushing dies work best with a custom tight neck chamber with neck turned brass.

And in a factory chamber the full length Forster benchrest die will produce less neck runout than a bushing die.

The statement below is directly from the Redding bushing FAQ.
Our tests showed that case neck concentricity is directly proportional to bushing size. In other words, as you size case necks with progressively smaller bushings, the concentricity gets progressively worse.

Meaning in the average factory rifle you are better off with a standard non-bushing Forster full length die. This is because you have no control over how much the neck expands when fired. And Redding tells you when you reduce the neck diameter .004 or more with a bushing die you will induce neck runout. This means a standard non-bushing type full length die will make more concentric cases in factory chambered rifles. Or using a body die and the Lee collet die for less neck runout. I just prefer the Forster FL die with their high mounted expander and sizing the case once with very good results.

And my point being is far too many shooters with factory rifles read the posting here and think they will be better off with a bushing die and they are not. And neck turning has a big effect and Redding tells you if your neck thickness varies .002 or more then use the expander that comes with their bushing dies.

Bottom line. how long does someone have to be in this forum before they find out who has custom chamber rifles and who does not. Meaning who's advice given here applies to the readers type rifle.

 

[Dusty Stevens]

Whatever floats your boat sir.

 

[Ccrider]

How does all of this for in with “n133 in 6 ppcs like more neck tension.” I read this often.

 

[Dusty Stevens]

How does all of this for in with “n133 in 6 ppcs like more neck tension.” I read this often.

Some do, most dont

 

[BoydAllen]

Sometimes I get the feeling that guys are tying to just buy one bushing, that they really don't like doing their own experiments.

Years ago, I took a 133 load that was shooting in my 6PPC loaded test groups with progressively increasing neck tension, from .001 through .003. I had the bushings because at the time that I started using them I liked the idea of being able to experiment. .001 did not look good, .002 was a lot better, and there was a little improvement with .003 although with one group it could have been random.

The real reason that I increased my neck tension to .003 was that Del Bishop told me that he and Steve Kostanich had gotten better results that way.

I have not had any concentricity issues with that with necks in the range of .008 to .0086.

An example of a powder that did not seem to require as much neck tension, or show much difference, is some Israeli made 2015 that I had a little of a long time ago. Another example : A friend who started out with LT32 with neck tension more appropriate to 133 saw his results improve when he backed his tension off .001.

Do your own experiments. Bushings are not that expensive.

For those that are interested, I have a one piece Hornady die for 6PPC that came with a neck ID of about .258. The brass that I size with it is very straight, and with the right neck thickness and powder it would work very well, but even though the cases run out less than a half thousandth I can't see any improvement on the target, and that is my final word measuring tool.

 

[Delfuego]

Whidden told me numbers down.

 

[Dave Brown]

The Wilson Bushings seem to make about a half thousandth's difference depending on whether you place the number up or down.

 

[butchlambert]

I can't give you a scientific answer on 133 neck tension, but most guys have better luck with a tighter neck tension. I've heard that it takes 133 a little more time to build pressure. Milliseconds. I used to be in the carbide bushing business. I,of course, have 8 bushings in .0005 increments in 22,6mm, 6.5, and 308. That is 32 bushings. I had a large radius on my first run, I changed to a very tight radius on the advice of Gene Bukys. It does allow you to size further down on the neck.

 

[BW]

Whidden told me numbers down.

Same here, I asked there thoughts on it shortly after receiving one of there dies. He said numbers down.