Looking some pointers on forming 6.5x55 brass from .308. I assume that .308 would be better than any of the longer ‘06 cartridges. Have 57 pieces of .308. I also have a Hornady neck turning tool that I bought to use for 300 blkout. Found a nice Carl Gustav 1903 Swedish Mauser on my birthday last month. Have dies, Lyman mould, etc ordered.