Neck sizing only

Ed Smurf

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I'm quite new to reloading...so here is my question.
If I want only to neck size, do I use a collet die only, how do I get the primers out...? Do I need other dies for that. I have the FL dies but no neck sizing dies. Your advice is appreciated.
 
The Lee collet neck die punches the spent primer out as it sizes the neck.

Occasionally you will need to bump the shoulder back. Use a properly adjusted full length die with the spindle removed, then run through collet die.
 
I'm quite new to reloading...so here is my question.
If I want only to neck size, do I use a collet die only, how do I get the primers out...? Do I need other dies for that. I have the FL dies but no neck sizing dies. Your advice is appreciated.

If you only want to neck size, and a Lee Collet Die is available for your cartridge, it is a good way to go. You may need to buy more than one mandrel to get the right neck fit. The Collet Die includes a decapping pin to get the primer out.

Another option, which has a lot of merit too, is to do a partial FL resize. Stroke your press to maximum, and then back the FL die away a quarter inch or so. Then by trial and error tighten it down until you only resize about 2/3 of the neck. If you can get cartridges that are resized this way to fit in your chamber, it has the advantage of the case fitting the chamber much better. And of course not working your bass so much.
 
The Lee collet neck die punches the spent primer out as it sizes the neck.

Occasionally you will need to bump the shoulder back. Use a properly adjusted full length die with the spindle removed, then run through collet die.

Thats gonna cause a problem. A FL die will undersize the neck. With the sizing button removed there is no way to bring the neck back up to the size required to seat a bullet.
 
I can't understand why modern reloaders are so hung up on neck sizing, only. If you are using a military rifle, like a Lee Enfield, yes, the brass will last much longer by neck sizing only, provided the first firing with a new case was carried out properly. However, with most sporting rifles there may not be any difference in how many firings the case will stand before it wears out, in whether it is just neck sized, or full length resized every time.
If it is accuracy you are thinking of, I will wager that you can not prove whether the neck sized or FL sized are the most accurate. And if you do, there is a good chance it will be the full length resized that will be the most accurate.
 
I'm quite new to reloading...so here is my question.
If I want only to neck size, do I use a collet die only, how do I get the primers out...? Do I need other dies for that. I have the FL dies but no neck sizing dies. Your advice is appreciated.

Ed - it sounds like you're where I was 15 months ago....asking good questions, but unknowingly opening a proverbial can of worms. FL vs. Neck only is a long lasting debate, likely never to be settled. The thing with neck only is that you'll still have to FL periodically.

I ended up buying a 20$ Hornady decapping die to limit wear on my Reddings.

Welcome to the world of overthinking the living sh!t out of everything!!!!

Be safe.

GGG
 
H4831, I agree 100%...........you must be almost as smart, good looking and modest as I am. :evil:

Sierra bullets does all their accuracy testing with full length resized ammunition and your cases will last just as long if you adjust the die for minimum shoulder setback or bump.

The problem with neck sizing only is the body of the case is not fully supported and the case will be less concentric with more neck runout.

At the Whidden custom die website they tell you they get "LESS" neck runout with their non-bushing full length dies.

And the late Jim Hull of the Sierra ballistic test lab jokingly said "The case should fit the chamber like a rat t u r d in a violin case" meaning he full length resized his cases.

And Jim Hull competed in national competition and won matches with full length resized ammunition. Plus if you check the majority of competitive shooters full length resize.
 
Thats gonna cause a problem. A FL die will undersize the neck. With the sizing button removed there is no way to bring the neck back up to the size required to seat a bullet.


Bump the shoulder back with the FL die.........THEN run it through the collet die, a two step operation.

You will only have to bump the shoulders about every 10 firings, given sane pressures.
 
I can't understand why modern reloaders are so hung up on neck sizing, only. If you are using a military rifle, like a Lee Enfield, yes, the brass will last much longer by neck sizing only, provided the first firing with a new case was carried out properly. However, with most sporting rifles there may not be any difference in how many firings the case will stand before it wears out, in whether it is just neck sized, or full length resized every time.
If it is accuracy you are thinking of, I will wager that you can not prove whether the neck sized or FL sized are the most accurate. And if you do, there is a good chance it will be the full length resized that will be the most accurate.

It is generally the sizing button in the full length die that causes accuracy issues.
 
I can't understand why modern reloaders are so hung up on neck sizing, only. If you are using a military rifle, like a Lee Enfield, yes, the brass will last much longer by neck sizing only, provided the first firing with a new case was carried out properly. However, with most sporting rifles there may not be any difference in how many firings the case will stand before it wears out, in whether it is just neck sized, or full length resized every time.
If it is accuracy you are thinking of, I will wager that you can not prove whether the neck sized or FL sized are the most accurate. And if you do, there is a good chance it will be the full length resized that will be the most accurate.

There are target shooters that use FL dies only and resize after every firing. They also anneal after every firing, and their dies are custom made for their chamber. Net result is that they are minimizing the working of their brass, and annealing just in case. The average reloader is not going to anneal after every firing, and is not going to get custom dies made.
 
It is generally the sizing button in the full length die that causes accuracy issues.

If you are referring to case runout, kind of yes, for two reasons. One the neck of the die sizes the brass down way too much. And second the exapander ball is located way too low in the die. The problem is not the use of an expander ball, it is the neck size and ball location.
 
For me personally, after working up nice loads for three separate rifles, the neck sized cases have consistently been more accurate. That's not to say I couldn't make great ammo out of FL sized stuff but IME the neck sized was simply better. All the reading on the net couldn't change my opinion after the results I produced myself. You have to try both for yourself and see what works for you as this is a topic that will never be settled.
 
There are target shooters that use FL dies only and resize after every firing. They also anneal after every firing, and their dies are custom made for their chamber. Net result is that they are minimizing the working of their brass, and annealing just in case. The average reloader is not going to anneal after every firing, and is not going to get custom dies made.

Now I know where Jim Hull got all the rat fecal debris for his violin case.

All the rifles use in the ballistic test lab by Sierra bullets for their reloading manuals are off the shelf factory rifles. And they full length resize all this test ammunition because it is more concentric, has less runout and is more accurate than neck sizing.
 
I'm quite new to reloading...so here is my question.
If I want only to neck size, do I use a collet die only, how do I get the primers out...? Do I need other dies for that. I have the FL dies but no neck sizing dies. Your advice is appreciated.

The collet neck die is a wonderful neck sizer and I prefer it over others.

I do suggest you also include a way to control the headspace growth that will eventually happen. I prefer to use a Redding body die to bump the shoulder.

As GGG said, the FL vs NS debate rages on... the answer is very simple but mostly overlook. You size the case "enough" for proper function under the tasks and firearm choosen.

Dies are merely tools to manipulate to get the end result you want... There is no one right answer....

It is like having a debate on flat head vs phillips screw drivers... I would personally just use the tool that fit the screw head... but that is just me.

YMMV.

Jerry
 
The collet neck die is a wonderful neck sizer and I prefer it over others.

I do suggest you also include a way to control the headspace growth that will eventually happen. I prefer to use a Redding body die to bump the shoulder.

As GGG said, the FL vs NS debate rages on... the answer is very simple but mostly overlook. You size the case "enough" for proper function under the tasks and firearm choosen.

Dies are merely tools to manipulate to get the end result you want... There is no one right answer....

It is like having a debate on flat head vs phillips screw drivers... I would personally just use the tool that fit the screw head... but that is just me.

YMMV.

Jerry

Mystic Precision

I have several Lee collet dies and can't make myself like them, sorry.

What you are doing is full length resizing from the neck down with the body die and then using the Lee collet die to size the neck. (two sizing operations)

And a Forster full length benchrest die will do the same thing in a single operation. And if needed Forster will hone the necks of their dies to your desired diameter

Kevin Thomas of Team Lapua USA full length resizes his cases and was Jim Hulls replacement at the Sierra ballistics test lab.

I first read about the rat t u r d in the violin case at German Salazar web page and then from Kevin Thomas and both of them knew the late Jim Hull.

I'm not a mystic or very precision any more, I drink too much coffee and have the start of cataracts.

What I am saying is the average shooter with a off the shelf factory rifle is better off full length resizing.

And since I have been using Forster full length benchrest dies runout is never a problem.

The culprit is cheaper Remchester brass that doesn't have uniform case wall and neck thickness. When this type cases are fired in a SAAMI chamber they become egg shaped and warp. (warped banana shaped case)
And these warped cases destroy your accuracy and when full length resized they reduce the chance of the bullet being out of alignment with the bore.

Bottom line, too much of what benchrest shooters do filters down to the average Joe with a off the shelf factory rifle and is simply not needed.

My 2 cents and assorted Craftsman screw drivers.
 
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A Redding body die is NOT a "FL" sizer... it is dimensioned to be near SAAMI min spec around the shoulder area angle and just over into the case body like a FL sizer BUT the rest of the body area and base are at SAAMI MAX.

It obviously doesn't touch the neck.

A unique idea that gives you the lattitude to deal with all the variations and tolerances in chamber spec... and there are many. FL dies SHOULD be set to SAAMI min over the entire case body but they vary just like most things.

FL die tells you WHAT sizing process the die SHOULD do but it most certainly doesn't tell you what the dimensions of the extracted case will be... and there in lies the problem and confusion. Dimensionally, FL sizing dies vary from manf to manf and from run to run. And each company is allowed the lattitude to make dies within the tolerance of SAAMI and then some.

If you are lucky enough to have a min spec sizing die and field gauge sized chamber, you are going to have some real spicy results. Just read all the questions in this and every other shooting forum asking for help with split cases and what have you.

So the whole point is to control the headspace length which is what causes cases to be stiff to chamber BUT leave the majority of the case body and web area untouched (as long as this fits the chamber). This allows:

- proper chambering and rifle function
- the longest lifespan for any case,
- ensures that fireformed dimensions are maintained
- and leads to centered and aligned ammo for much better accuracy.

In pretty much every bottle neck cartridge, there is body taper. This serves to help with extraction BUT it can also help with cartridge alignment (think Morse Taper as used in collets for a milling maching, etc).. and this can lead to more accurate ammo. The fireformed case is much better supported through the web area and this really improves primer pocket life

The concept of using a neck sizing die, and body die is even more important in factory rifles vs match chambers with super fussy dimension control, due to the massive range of chamber dimensions. If a new reloader learns how to set up a body die, they must learn immediately things like headspace, clearances in the neck and case expansion. When they use a FL sizer, they put faith in the parts and have little idea why the outcome is either positive or negative.

Now if the gun industry held EVERYTHING to tight and consistent tolerances, yeah, 1 die, don't think, it works, life is good BUT given the ridiculous range of outcomes, I feel reloaders should get a better understanding of what they are trying to achieve and how their tools actually work.

So using a proper sizing die or at least sizing the case properly, can have benefits in accuracy, function but more importantly SAFETY.

YMMV.

Jerry

PS this is for ammo that will be used in 1 rifle under moderate pressures.. If you making "working" ammo, then size for function under the worst of expected conditions.
 
Ed - it sounds like you're where I was 15 months ago....asking good questions, but unknowingly opening a proverbial can of worms. FL vs. Neck only is a long lasting debate, likely never to be settled.

Welcome to the world of overthinking the living sh!t out of everything!!!!

Be safe.

GGG

Yes. Sounds very familiar.


For me personally, after working up nice loads for three separate rifles, the neck sized cases have consistently been more accurate. That's not to say I couldn't make great ammo out of FL sized stuff but IME the neck sized was simply better. All the reading on the net couldn't change my opinion after the results I produced myself. You have to try both for yourself and see what works for you as this is a topic that will never be settled.

Same here.

The collet neck die is a wonderful neck sizer and I prefer it over others.

I do suggest you also include a way to control the headspace growth that will eventually happen. I prefer to use a Redding body die to bump the shoulder.

As GGG said, the FL vs NS debate rages on... the answer is very simple but mostly overlook. You size the case "enough" for proper function under the tasks and firearm choosen.

Dies are merely tools to manipulate to get the end result you want... There is no one right answer....

It is like having a debate on flat head vs phillips screw drivers... I would personally just use the tool that fit the screw head... but that is just me.

YMMV.

Jerry

This has worked for me. There was no mentor for me to learn from and the concept of reloading seem daunting at the time. Albeit 2 operations, it's an easy concept to grasp and put into practice for someone that's never reloaded before. The other die systems, at that point in time, had too much going on. I feared the ability to troubleshoot the necessary adjustments with other die systems.

Now I understand the forster/RCBS die does all combination that BigEd explains very well. Perhaps now investing in this die system, which was more expensive at the time, is a consideration. At that time, jumping off into reloading spending higher dollars on something that I was not convinced of, was a consideration. Perhaps there are others that are traveling the same road?

I share the same philosophy with the work I do and have now gained some experience and related measurement tooling to put any concerns to bed. The process is running extremely well and much better than ever anticipated. (This is bad news because somewhere in my future lies an accuracy rifle. This stuff is way too addictive for me.:()

Mystic Precision

I have several Lee collet dies and can't make myself like them, sorry.

What you are doing is full length resizing from the neck down with the body die and then using the Lee collet die to size the neck. (two sizing operations)

And a Forster full length benchrest die will do the same thing in a single operation. And if needed Forster will hone the necks of their dies to your desired diameter

Kevin Thomas of Team Lapua USA full length resizes his cases and was Jim Hulls replacement at the Sierra ballistics test lab.

I first read about the rat t u r d in the violin case at German Salazar web page and then from Kevin Thomas and both of them knew the late Jim Hull.

I'm not a mystic or very precision any more, I drink too much coffee and have the start of cataracts.

What I am saying is the average shooter with a off the shelf factory rifle is better off full length resizing.

And since I have been using Forster full length benchrest dies runout is never a problem.

The culprit is cheaper Remchester brass that doesn't have uniform case wall and neck thickness. When this type cases are fired in a SAAMI chamber they become egg shaped and warp. (warped banana shaped case)
And these warped cases destroy your accuracy and when full length resized they reduce the chance of the bullet being out of alignment with the bore.

Bottom line, too much of what benchrest shooters do filters down to the average Joe with a off the shelf factory rifle and is simply not needed.

My 2 cents and assorted Craftsman screw drivers.

I appreciate the experience speaking in your posts BigEd. I was caught in the "Remchester" category trying to make Federal brass work for some measure of accuracy but the brass inconsistencies almost made me give up. I couldn't get any accuracy improvement due to sooo much case variability, hardness included. I'm sure that you can appreciate that there is a demographic of hunters that has kept brass for years thinking that one day they may reload. Today I am thankful for starting with lesser quality brass because it's made me better at this game and understand the quality of brass.

I've made my mistakes and have learned from them, some pretty concerning for novices, but thanks to yourself and others who have answered the most elementary of questions, we now have success. I fully agree with you that some of the bench rest stuff creeps in that perhaps isn't necessary for the average joe. There is likely very many that reload for the savings alone and are not to concerned about any accuracy improvement. For myself, because there was marginal improvement over factory, I needed to go deeper to resolve the disappointing results. The every step in the evolution became more advanced.

In my case I'm not sure that working with remchester brass and dies that required a few adjustments and good reloading comprehension as a novice would have been successful. Perhaps I'm an exception to the rule. Ed I can say now that I'd give the die setup you are using a good go!

In summary, I believe each reloader starts down their own path meandering away. Some go into the rhubarb and others have no trouble staying straight right out of the gate. Each reloader is unique as a bolt action rifle with it's individual pressure limits. In my opinion reloaders, like rifles can be grouped together, but reloading is a great example to explain that "this way" or "that way" cannot be applied unilaterally

The bench rest stuff is available for those that want it. You and Jerry are on opposite sides of the fl vs neck size topic and very likely have the same result, reloaders can decide for themselves.:)

Regards Ed
Ron
 
I can't understand why modern reloaders are so hung up on neck sizing, only. If you are using a military rifle, like a Lee Enfield, yes, the brass will last much longer by neck sizing only, provided the first firing with a new case was carried out properly. However, with most sporting rifles there may not be any difference in how many firings the case will stand before it wears out, in whether it is just neck sized, or full length resized every time.
If it is accuracy you are thinking of, I will wager that you can not prove whether the neck sized or FL sized are the most accurate. And if you do, there is a good chance it will be the full length resized that will be the most accurate.


The Lee collet dies let me do it dry with no lube
 
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