neck sizing

[ffwd]

I'm having trouble finding a neck size die set for 7mm WM. I did, however, find an RCBS FL set and a Hornady 7mm neck sizing die. Is there a reason the neck sizing die is not marked for a specific cartridge?

[Dick284]

You can set your dies to partial fullength size quite easily.
It usually does as good as a neck sizer any ways.
Here is how to do it.

Do this first:
Move all primers and powder away from your loading area, and make sure any spilt powder is cleaned up
Now
Set up a few pieces of brass that were fired in the rifle you are loading for, lubricate them as usual.
Now take a wooden match and smoke the neck and shoulder region of the cases, avoid getting the case too hot.
Now loosen the lock nut on your sizing die and run you die into your press stopping about 3/16" higher than it usually sits for FL sizing.
Once the smoked case has cooled run it into the die.
Then remove the case from the die, and observe how much of the soot has moved off of the case.
Slowly lower your die to the point where the soot just gets touched on the case shoulder. You may be going a 1/16th of a turn at the end.
Once the first sign of contact is made with the shoulder, try chambering the case in your rifle. Slowly(1/16th of a turn) lower your die till the case just chambers smoothly. At this point you've essentilly just bumped your shoulder enough to give trouble free chambering.
Now try a couple other case to see if the fit matches, and adjust your dies accordingly.
Once satisfied with the die set up tighten the lock nut, and then get after it.

FWIW: What is a 7mm WM? Weatherby or Winchester?
If you meant 7mmWSM, you may find that nothing but FL sizing may produce trouble free chambering. That is a discussion unto it's self.
As for the 7mm WTBY and RM the above system works just fine.

[ffwd]

Thanks for the info. It's been a while since I sat down in front of the press.

FWIW:It is a 7mm Weatherby Mag.