I had to hunt all day to find this but finally did. Here is a universal form die.
I took an old gunbarrel and turned a 3 1/2 in long cylinder section then threaded it 7/8-14.
I drilled a 1/2 hole through the center. Then I bored out the hole just big enough for a pieced 5/8 drill rod to slip fit. I bore this hole just 3 1/4 deep. Then I cut the 3 1/2 inch section off.
I made sizing bushings and spacer bushings 1 inch long by 5/8 diameter. I also made some 1/2 spacers. I also made a cap to hold everything in place.
The spacers I drilled out 1/2 inch.
For the Donaldson Wasp I made sizing bushings by drilling and reaming them out using chamber reamers. I made one .30 cal neck diameter, 7 MM neck, 6 mm neck and .219 Donaldson was neck. I put the DW shoulder in the dies with the reamer.
To use these dies to make the Donaldson Wasp, I put in a short spacer, the 30 cal neck and shoulder former bushing, then a long spacer and the cap on top. The long spacer is to hold the dies down in the body to be held by the cap. When I had my DW reamer made I also bought head space guages to headspace on the shoulder and not the rim.
So to adjust the die by putting the head space gauge on the shell holder and running the ram to the top. Then I screw the sizing die down to contact the guage. I lower the ram and turn the die in another 1/8 turn and lock it.
This afternoon, to make a case instead of the guage I used a case i already had to set up.
First pass pushes the shoulder back.
Then the neck is reduced to 7mm neck, 6 mm neck and .219 Neck. by replacing the bushing.
Most of the several thousand DW cases I made were trimmed to length with a Forster drill press trimmer. I also made this cut off die by chambering a piece of die stock and cutting it off about 1/4 inch long. I use this if I have just a few cases to make.
After trimming the cases I anneal necks and shoulder and full length size in the regular sizing die. I fire form every case and then final full length trim and ream necks.
I built these dies 20 years agon and have formed a lot ocases with them.
Here's the gun I built.
And the groups I got with it.
One of my next rifle projects is to build a DW on a Martini.