What process for new brass…

[slikmrc]

Would you run the Lee collet neck die as I don't have a mandrel die

Your Hornady die should have a neck expander on the decap rod. You can run the cases over the expander to uniform them.

 

[Paulstarr]

So I have a batch of new adg 6.5prc brass. They recommend sizing it and even though their packaging is good the necks have a few dings in them.
So I have a set of hornaday match grade dies and a Lee collet die. What would you guys recommend?
Thanks for any help

It's always a good idea to ensure that the new brass you buy is the same wall thickness as your existing brass, otherwise the neck tension won't be the same.I use a expander mandril on the new brass and then use your chosen neck bush to resize the new brass to the size you want.

 

[Mike D Texas]

New brass with ADG, Lapua and Peterson. I size the necks and chamfer and deburr the necks

Same. With new brass I mandrel, chamfer, debur, load and shoot. I don't even start load dev until after the first firing.

 

[john k]

I use Lapua, Peterson, and ADG brass. I run a mandrel thru the neck for consistent bullet seating, chamfer, deburr, load, and send it down range.

 

[Revolting Peasant]

Would you run the Lee collet neck die as I don't have a mandrel die

I have done this. It works. You are stuck with the mandrel size used in the Lee collet die, but it is usually close to optimum. The mandrel can be modified but that's another question thread.

My thoughts are, you are paying for premium brass. It should come ready to go with minimum prep.
Deburr/chamfer neck inside and out if needed.
Minimum necessary to iron out neck dents.
Load and shoot.
I don't get hung up on lengthy reloading minutia vudoo unless there is a consistent, repeatable resulting difference on the target. Premium brass bypasses a lot of those processes.
I would pick out 5 or 10 pieces of brass with round necks. Chamfer inside and out. Load and check. Now you have a baseline to compare against. Your rifle will tell you the truth on the target. Take the dented necks and get them round. Load and shoot to compare.

If you switch to cheaper brass, all bets are off and you may have to do extra steps to get there. But since you specified you were using ADG I tailored my answer to premium brass.

 

[tim1457]

I looked on their website's FAQ page. I didn't see anything about annealing new brass. Can you share the link with that information?

That's not true, Starline brass is annealed from the factory. See attachment straight from their Facebook page.

 

[FireFlyFishing]

That's not true, Starline brass is annealed from the factory. See attachment straight from their Facebook page.

Yep, that's what I thought.