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I do believe you can neck up by just running it into 9-62 die according to rcbs. But some people will go to a8mm or 35 whelan die first.
 
Mauser98 said:
Here's a recent thread that shows the process. .35 Whelen is just a simple neck-up through a fl die.

http://canadiangunnutz.com/forum/showthread.php?t=663917&highlight=9.3X62
Click to expand...



Don't forget that to do this properly you still need to neck the case up to well over 9.3, and then neck back down, as described in the thread.

Why? Because the shoulder on the 9.3 is a full .090 inch further up the body of the case than the '06. You can see the difference clearly in the two chamber drawings.

If you don't, you will have almost a tenth of an inch of headspace!

And, by the way.......http://www.canadiangunnutz.com/forum/showthread.php?p=6651932#post6651932

Ted
 
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9.3 x 62

This is NOT just a neck up and fire process !!! The 9.3 shoulder is significantly further forward than any of the '06 family, just necking up and loading will give you extreme excess headspace and probable case separation.
I have used both cases, Whelen and '06, I prefer the whelen as moving brass the least amount is always desireable, and they come very close to the correct length for the 9.3.

The correct proceedure is to take the parent case and run it out to a size significantly larger than the 9.3 neck OD, Ted (Why Not?), who has done hundreds like this takes them out to about .420 OD or .400 ID (don't be cheap with lube inside the neck) This requires a neck expanding plug for your die, which are easy to make or have made. (I borrowed Ted's initially) and then made my own later. Once you have your case expanded, you now run it through your FL 9.3 X 62 die, (this forms a shoulder at the correct point on your case body to headspace on) square up the case mouths and load 'em up.

The other option is to just neck up and load, but you must seat the bullet to crush fit into the lands so THAT fit then creates the headspace reference. This is iffy and very conducive to pressure spikes and blown primers. Best done with a very light load of quick powder.

I made 50 initially from 30-06 brass and split several necks (brass was unknown origin or times fired) and then purchased 100- 35 Whelen R-P cases new and ran them through the neck up/size down proceedure. I never lost a case and have much better neck tension using the Whelen as a parent case.
 
connexion123 said:
And that's what I thought. I had little knowledge on the .35 Whelen, but after some research, I figured that moving the least amount of brass was best. For the OD, I could use a .375 then .416 expander no? That may work in a series of progressing. I would obviously anneal the brass. I don't want to mess around with a total fire form from a simple neck up, I think doing it the long way, is the right way, is the best way.
Click to expand...

Yep, should work just fine, you might want to even add the 9.3 step first, then 375 then 416. You could even use a 40 cal pistol expander if by chance you load for such a critter.
I made an expander plug for my die from a 9/16 fine thread bolt, took me 15 mins in lathe. If you have access to one this is the best. I just made a long taper (1.5") from about .33 to .40 and then a cylindrical section at
.40 for about a 1/2". Polished it up like chrome and does it work slick.
Forgot to mention I used a much larger die for expanding, 416 taylor I think.
 
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