Is it possible to just neck size brass using a 2 die rifle set or do I have to buy a seperate neck die?

How do you de-cap?

There is a term called partial sizing which may accomplish what you seek. Extend the decapping rod and size part way down the neck with your full sizer die.

You need LEE de luxe die set. There is Collet neck sitzing die too.

Since we talk accuracy here and not necessarily saving pennies, I'd opine that buying the Lee collet neck sizer could likely be a better choice for you.

just back off the die a turn or 2 and you'll just size the neck. However I've never seen an advantage in neck sizing (boy am I gonna get it for this)

The more taper the case has and the less body expansion (or thr tighter your chamber is) the more successful "partial sizing" will be. With cases of minimal taper or lots of of body expansion the sides of the die (even when backed out the couple turns for "partial sizing") push in on the case and this pushes the shoulder forward. The bokt is then hard to close if it will close at all. Best solution is to get the neck size die. They are really not that expensive and are well worth having and using.

Larry Gibson

Funny, but depending upon caliber, or maybe depending upon the die manufacturer...I can't figure it out...

but I am having better luck with some, using the full length sizing die to neck size than the Lee Collet dies..

for almost every caliber I shoot, I have both the Lee Deluxe Die Set and an RCBS Die Set..

my commonly used calibers, I even have a 3rd set of dies for, from either Redding or Hornady..

I am finding out that certain things can influence what works best...

this is all a search and experimenting into seeing what can stretch useful brass life out the best or most...accuracy is staying great, so it is just along for the ride..

so far test results with several batches of brass in 223, 22.250 , 243 and 7 x 57 are yielding brass life, still in excellent shape with zero casualties at the 20 load mark.. and still counting..

since modifying how I prep brass, the few casualties I have had have not been in the test groups, which were all new brass when started and its been logged with each test batch..

casualties have been with other brass that had a service history already.. but they are cracking at the web in 90% of the cases...

this has been a rewarding odessy to say the least.. I've learned a lot thru using my head, instead of just following traditional ways...

I have easily doubled case life..and it is still going strong at that point... primer pockets are hanging tight also..

Anyone needs a RCBS Neck Sizing Die for .222 Remington? Like new, used maybe for 50 cases.

Partial neck sizing is one of my "trade secrets" in accuracy workups, especially in factory chambers that have generally bigger diameter necks. Depending on the caliber I only resize 50% of the neck length (easy to see by looking at the lube mark)--works great with 6mm Rem, .25-06, .270, etc, but need to resize maybe 75% of neck length on the short necked rounds like .243/.308, etc. My take on it is that the unsized neck portion fits more tightly in the chamber neck, thus helping center the cartridge in the chamber, starting the bullet off down the center--

Depending on the taper of the case you can sometimes neck size only with a two die set. If not (less taper) you can at least set the die to size only the neck down to 1/32" from the shoulder and get good results.
The best results come from powder charges that are reduced from maximum loads to the point where you get the best accuracy. The accuracy load will be different for a neck sized case that the FL sized case due to the expansion characteristics of the case in the chamber. If you already have a load that is accurate you may have to tune it for neck sized cases.