Forming 6.5 creedmoor from .308win

audet548

audet548

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Ok, so I finally received my 6.5CM dies and decided to experiment last night. I resized a .308win case using the 6.5CM full lenght sizing die and it went really smooth contrary to what I was anticipating. I then trimmed to lenght and here is the result. The right one is a factory hornady load.

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Now I gues I would be at the point of fire forming using the COW method and then normal reloading? Do I need to neck turn?
 
That one looks easy to do. The final neck thickness should be .015 or less. So the 7-08, 260 or 243 would also work. If you load a bullet in the new formed brass and measure the dia against the one on the right, that should give you an idea of neck thickness.
Enjoy
 
You can see the bulge of excess brass at the base of the neck on the formed creedmoor case... you got donuts.

Definitely form using COW then Lee collet neck die to force the bulge to the outside. Outside neck turn in steps so you don't gouge up the necks.

Set to skim the base, then deeper to skim more of the neck taper until it is all cut. Measure and then turn to whatever you feel is best. I prefer 11 to 12 thou.

I try and cut no more then 2 thou in a pass... just leads to cleaner and more consistent results.... Also, less strain on the hands or powered tooling.

you are off to a great start... Anneal and outside neck turn often and enjoy.

Jerry
 
Depending on the .308 brass you use, when you seat the bullet you may see a donut appear which means the necks will need to be turned.
 
Thanks for the advices! I have Norma brass so I think I have a good working base.

I've looked at turning tools but I wouldn't know which one to choose...what do you guys suggest?

As for annealing, I've seen videos of people doing it by hand, would it produce good results? The machines I've seen so far are quite expensive...
 
I have a Forster hand held neck turner. Cheap, easy and works well.
+1 on taking a thou off at a time. Try to take too much and you'll be compressing the brass more than cutting it.

Annealing by hand works fine, just make sure you use a proper temperature indicating liquid like tempilaq. The whole "just before it starts glowing in a dark room" thing is way too hit or miss.
 
audet548 said:
Thanks for the advices! I have Norma brass so I think I have a good working base.

I've looked at turning tools but I wouldn't know which one to choose...what do you guys suggest?

As for annealing, I've seen videos of people doing it by hand, would it produce good results? The machines I've seen so far are quite expensive...
Click to expand...

Norma is good brass but notorious for donuts and needing necks turned when sizing down.
 
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