But really the hardest part is holding on the those damn small bullets to seat them!
I neck down and make 20VT and 20SCC case from 223LC and bullberrys forming dies work great and you can use the double ended 20 and 18 for any 20 or 17 cal. Ive been around a 17 Mach IV that shot AA2230 and Exterminator well.Call Bullberry and get a double ended sizing die. One side goes to about 20 cal the other about 18 cal then one pass through a Mach IV die. H335 is an excellent powder. Rem 7.5, 20.2gr with 20 VMax goes 4250 in my rifle. A great cartridge. enjoy!
Amen, brother.