Paul, I’m neck sizing my brass using a .308 Win die with a larger expander. I use 303 Brit for my krag scout build and real 30-40 for the Constabulary but my new 30 in rifle won’t chamber the Constabulary loads so I’ve broken into my new hornady brass for it. Only shot it a little with full length sized but have loaded a handfull of neck sized brass [after firing in the long bbl rifle] which chamber fine. Looks like I’ll have to keep my brass segregated between the two rifles. Do I still need to anneal if only neck sizing? Thx, Ed