After reforming 257 Roberts brass into 6.5 X 257. I am left pondering the now incorrect head stamp. Rechambered barrels have lots of room to modify and or add data, case head, not so much. I'm curious as to technique's others may have used when approaching this minor quandary. Obviously well labeled boxes, but is this enough? I've used sharpie indelible pens on the side of load workups waiting for analysis. For brass, it is stretching the word "indelible" some. Vibrating engraver may be the answer albeit I'll need to enlist younger eyes with less arthritically stifled dexterity than I. Any input to retire my thoughts on the subject appreciated.