Have some photos of the process - annealing first to color red (perfect term - thanks!)
then reshape with low rpm using RCBS case lube on the stamp
then turn from Solid Brass the crown - 18 mm to 13,25 - and let the Ball end mill make the finish
after cut off turn the inner side to 16,5 mm dia 2 mm depth and solder to the tube
thats it - just make the 9 holes 1 mm with 40 degree on a Dividing device
Yes you will need a workshop....
Have a nice day
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