Lee collet die vs. rcbs neck die
- Thread starter trazman
- Start date
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I'm not shooting factory chambered rifles but I do neck size. Lot depends on what your shooting and when you make changes can you see an improvement in accuracy and accuracy is lot more than someone saying this or that will or won't work.
Also ask what their shooting and post picture of what their shooting.
Hm guys i will do like this:
I will found a good load with rcbs fl dies and when the load will be good i wil resize some brass with lee collet dies, rcbs neck dies and rcbs fl dies an i hope i will have some difference in groups...
I will found a good load with rcbs fl dies and when the load will be good i wil resize some brass with lee collet dies, rcbs neck dies and rcbs fl dies an i hope i will have some difference in groups...
woods
Well-Known Member
traz just because you use a neck sizer does NOT mean that you can't full length size
They DO make Redding Body dies that will size the case body and push the shoulder back (if needed) after neck sizing with a neck die
Ok, can you show me the way how to do it?
This rifle is meant to shoot out to 1000m or more if possible, so I would like to squeeze the maximum from it...
woods
Well-Known Member
They are separate dies
Lee Collet
Lee Collet Neck Sizer Die 300 Winchester Mag
Redding Body Die
Redding Body Die 300 Winchester Mag
Neck size with the Lee Collet with no neck lube and straight necks
Size the case body and push the shoulder back with the Redding Body die (does not touch the neck). Set it just like you would your full length die where you only push the shoulder back a minimum amount of .001" or so.
You can choose to use both the dies or only use the Lee Collet
g0rd0
Well-Known Member
I have had a rcbs neck size die for 3006 and one bright morning the "carbide?" sizeing ring popped out with the brass. I was not impressed but, in all fairness when I called RCBS their response was send it back and we will fix it no charge. But, during the turn around (me been impatient), I got a collet die, I have not turned back. I prefere the collet die.
Now I use RCBS FL dies with brand new brass then fire form then collet size. The only time I have experienced any problems with collet sizeing is when Iam lax with the trimming.
I reload for 223, 7mm r.m., 3030 and 3006
Now I use RCBS FL dies with brand new brass then fire form then collet size. The only time I have experienced any problems with collet sizeing is when Iam lax with the trimming.
I reload for 223, 7mm r.m., 3030 and 3006
Dear Shooters;
I'm 75 years of age and have loaded hundreds of thousands of ammo and I don't understand all the fuss. the one most important thing that is missing from all but one of these posts is the following WARNING: Always check the case length of every cartridge you reload. You can be biased one way or the other on the type of die you use the tightness of the bullet, the amount of and type of powder, and the bullet. but if you don't check that length you can lose everything with the pull of the trigger. I use a Lee case length guage trimmer on every case I reload. They are cheap and foolproof insurance.*****. I'm always amazed at those that never check the thing that will blow your head off.
RustyBore
I'm 75 years of age and have loaded hundreds of thousands of ammo and I don't understand all the fuss. the one most important thing that is missing from all but one of these posts is the following WARNING: Always check the case length of every cartridge you reload. You can be biased one way or the other on the type of die you use the tightness of the bullet, the amount of and type of powder, and the bullet. but if you don't check that length you can lose everything with the pull of the trigger. I use a Lee case length guage trimmer on every case I reload. They are cheap and foolproof insurance.*****. I'm always amazed at those that never check the thing that will blow your head off.
RustyBore
While neither standard nor Lee collet neck sizing dies have been popular with folks shooting rimless and belted cases in competition (they don't produce very accurate ammo consistantly), they do have a following in other centerfire rifle reloading disciplines. In the last few years, more and more benchresters have switched over from neck only to full length sizing their fired cases; their smallest groups are the same size but their larger ones are not nearly as big. Folks competing with rifle fired off their shoulders in different shooting positions have done best with proper full length sized or brand new cases for decades. Sierra Bullets has got best accuracy with their tests of their bullets using good full length sizing tools and techniques in both rail guns used for quality control and rifles developing accurate reloads.
Consider the following. . . . .
When bottleneck case bullets are seated back off the lands some amount, they are best centered in the bore by having the case headspace on its shoulder. This centers the front of the case perfectly in the chamber usually when loaded and always when fired; the firing pin drives the case hard into the chamber shoulder and it centers there perfectly. Even a .243 Win case centers its neck and bullet perfectly in a .308 Win chamber this way. With the case neck well centered on the case shoulder, the bullet will be very well aligned with the bore. Even with a lot of clearance around the case such as a new case in an over size chamber. The case neck will be well centered in the chamber neck, too. And with belted cases, there's a tiny ridge that builds up a few thousandths in front of the belt that standard sizing dies do not touch. It interferes with repeatable positioning of the back end of belted cases in the chamber.
Regular full length sizing dies with their necks opened up a couple thousandths smaller than a loaded round's neck diameter end up making the fired case neck best centered on the case body. Their body holds the case body firmly in place perfectly aligned with their neck that sizes down the case neck all the way to the shoulder and sets the fired case shoulder back a thousandth or two. Some die companies will open up their standard dies for a small fee.
Full length bushing dies are almost as good but their bushing floats sideways in the die and therefore does not perfectly center the case neck on the case shoulder. The die's body sizes the body down and sets the shoulder back as needed. But about 1/32nd of the neck doesn't ste sized; it stays at its fired diameter and may get bigger over several reloads on the same case.
With belted cases, there's a collet die available that sizes down that ridge in front of the belt. Innovative Technologies - Reloading Equipment is the only commercial source of a die to do that. Others have cut the middle section of a standard belted case full length sizing die and cleaned up its bottom edge. Setting it in the press so fired belted cases size the body all the way back to the shoulder does the job. Cases so sized will shoot as accurate as new belted ones.
All the above aside, depending on how one tests their reloads for accuracy, any combination of die, its setup and use along with the way accuracy tests are conducted, any die and technique may well produce the best results. If the way you test a given load gives results within 10% each of several times, it's a good test and the results are meaningful. A load that produces several few-shot groups ranging from 4 to 10 units of measurements means there's not enough shots per group for any of them to be very meaningful.
Consider the following. . . . .
When bottleneck case bullets are seated back off the lands some amount, they are best centered in the bore by having the case headspace on its shoulder. This centers the front of the case perfectly in the chamber usually when loaded and always when fired; the firing pin drives the case hard into the chamber shoulder and it centers there perfectly. Even a .243 Win case centers its neck and bullet perfectly in a .308 Win chamber this way. With the case neck well centered on the case shoulder, the bullet will be very well aligned with the bore. Even with a lot of clearance around the case such as a new case in an over size chamber. The case neck will be well centered in the chamber neck, too. And with belted cases, there's a tiny ridge that builds up a few thousandths in front of the belt that standard sizing dies do not touch. It interferes with repeatable positioning of the back end of belted cases in the chamber.
Regular full length sizing dies with their necks opened up a couple thousandths smaller than a loaded round's neck diameter end up making the fired case neck best centered on the case body. Their body holds the case body firmly in place perfectly aligned with their neck that sizes down the case neck all the way to the shoulder and sets the fired case shoulder back a thousandth or two. Some die companies will open up their standard dies for a small fee.
Full length bushing dies are almost as good but their bushing floats sideways in the die and therefore does not perfectly center the case neck on the case shoulder. The die's body sizes the body down and sets the shoulder back as needed. But about 1/32nd of the neck doesn't ste sized; it stays at its fired diameter and may get bigger over several reloads on the same case.
With belted cases, there's a collet die available that sizes down that ridge in front of the belt. Innovative Technologies - Reloading Equipment is the only commercial source of a die to do that. Others have cut the middle section of a standard belted case full length sizing die and cleaned up its bottom edge. Setting it in the press so fired belted cases size the body all the way back to the shoulder does the job. Cases so sized will shoot as accurate as new belted ones.
All the above aside, depending on how one tests their reloads for accuracy, any combination of die, its setup and use along with the way accuracy tests are conducted, any die and technique may well produce the best results. If the way you test a given load gives results within 10% each of several times, it's a good test and the results are meaningful. A load that produces several few-shot groups ranging from 4 to 10 units of measurements means there's not enough shots per group for any of them to be very meaningful.
g0rd0
Well-Known Member
do not remove it, that is what returns your inside neck to the right size. Try lubeing the inside of the necks also before sizing that should make withdrawing the case easyer
Leave it in else bullets will be too hard to seat; it opens up the case mouth after it's sized down.
Expander balls tend to bend case necks either dry or lubed. Least bending is when the ball is just below the die's neck in its shoulder area so it starts expanding the case neck while most of the neck is still in the die 's neck.
Expander balls tend to bend case necks either dry or lubed. Least bending is when the ball is just below the die's neck in its shoulder area so it starts expanding the case neck while most of the neck is still in the die 's neck.
