Hello to all, new here, hope everyone is good! Been necksizing with a lee collet die and I love it. Found a sweet load. Brass (308) starting to get tight in chambering. Bought a redding body die, started trying chamber back to die technique. Got mad and resized completely! Question: will I need to tweak my sweet load now that I have resized case completely? If so powder up or down? Or any tips would be appreciated?
Thanks
Best thing I ever did: buy full length size dies. Pick a brass brand and stick with it. Send your sizer dies back to manufacturer with a dummy round, preferably your bullet of choice. Have them hone the neck of your die to 0.003 less than your loaded dummy. Don't use the expander button/ball when resizing your cases. Runout is about non-existent. Size them, trim them, deburr, and load them again. I anneal after every 2-3 firings now.
Bonus #2 is if you can have a barrel chambered with a neck about 0.002 to 0.004 greater than your dummy round. So, when sizing again, there is only 5 to 7 thousandths of total neck change from fired to sized case. This greatly reduced work hardening of the case and extends its life.
I'm a fan of full length sizing. You can run into concentricity issues with a neck sizer die while using the expander, unless your dies are custom made.