Neck sizing with a FL die?

[megastink]

I have some new Starline 6.5 Grendel brass that, according to their website, only needs neck sizing if at all. I only have a FL resizing die. Will I do any damage FL resizing all these? I've heard that you can neck size with a FL die, but can't find a good source of info. Any help would be appreciated. TIA!

 

[PddPdd]

Should not be a problem. Most neck size new brass to remove any dents in the neck from shipping to ensure better seating, or achieve a different neck inside diameter ("neck tension").

 

[Dosh]

Not the best way to size a neck, but if it's all you have……
There are numerous die makers with your neck die available and I think Hornady has a universal 6.5 neck die. I neck size all new brass, but FL size only after firing. Good luck

 

[jimbires]

I run new brass through my full length die . usually new brass is way undersize , so the full length die only sizes the neck .

 

[cajun]

You just need to straighten the necks. Run the brass into the die until you feel it in the neck then back it out. You dont need to push the shoulders back.

 

[Taylorbok]

You can back your die off so it only sizes the neck. I would just bottom it out and size it like was mentioned above factroy brass is small so you won't be moving anything anyways.

 

[Rosebud]

If you're shooting a bolt gun neck sizing will work out ok. If its a gas gun full length is it. I shoot two different Grendels and full length size both every time. But I'm hunting and don't want any issues with feeding. But I also full length size new brass, and all of mine are Lapua. Like the other post said, new brass can be very under size. Second firing is where you will really get you accuracy.

 

[WHITEBULL]

I FL my gasser rounds. never any issues.

 

[ButterBean]

You can back your die off so it only sizes the neck. I would just bottom it out and size it like was mentioned above factroy brass is small so you won't be moving anything anyways.

That will only size about a1/4 othe neck set up that way, To the OP, Just FL resize it, it won't hurt a thing

 

[Blacktailer]

It's called partial full length sizing. It just means you run the brass in until it sizes the neck and does not push the shoulder back at all. Been doing it for years on my bolt guns and only bump the shoulders when they need it which is only every third loading or so. It will neck size your brass much more consistently than a traditional neck die because the body is supported. I once had a neck die from a major manufacturer that induced over .007 runout in the brass so do not use any neck dies now except Lee collet dies.

 

[megastink]

It's called partial full length sizing. It just means you run the brass in until it sizes the neck and does not push the shoulder back at all. Been doing it for years on my bolt guns and only bump the shoulders when they need it which is only every third loading or so. It will neck size your brass much more consistently than a traditional neck die because the body is supported. I once had a neck die from a major manufacturer that induced over .007 runout in the brass so do not use any neck dies now except Lee collet dies.

So just to be clear, I put the brass in my press, raise it into the die until I encounter resistance, and back it back down?

 

[Taylorbok]

So just to be clear, I put the brass in my press, raise it into the die until I encounter resistance, and back it back down?

Raise your press (with no brass) screw your die down until it touches the shell holder. now back it off one full turn and tighten the lock ring. Size a piece of lubed brass and inspect it. you should be able to see how much of the neck you sized. repeat this and keep adjusting the die down towards the shell holder until you are happy with how much neck you have sized without moving the shoulder. (measure the shoulder to be sure you aren't moving it)

My bet is with virgin brass you can crank the die right down to the shell holder

 

[megastink]

Raise your press (with no brass) screw your die down until it touches the shell holder. now back it off one full turn and tighten the lock ring. Size a piece of lubed brass and inspect it. you should be able to see how much of the neck you sized. repeat this and keep adjusting the die down towards the shell holder until you are happy with how much neck you have sized without moving the shoulder. (measure the shoulder to be sure you aren't moving it)

My bet is with virgin brass you can crank the die right down to the shell holder

Good info. Thank you!

 

[gohring3006]

Measure before and after and I'll bet you'll stretch your brass. You might notice closing your bolt, maybe not with new brass but after a few firing and sizing that way.