Re: Reloading Crimped Brass & Head Stamp question
No sweat at all on reloading the 30'06 stuff. The remains of the crimp may look a bit unsightly, but they won't hurt a thing. After a few resizings and a bit of stretching, the trimming process will pretty much make them disappear. Not a big deal, don't sweat it.
As for the 270 brass, it was Lake City (LC) USGI 30'06 ammo that has been reformed into 270 WCF. When LC brass was plentiful and inexpensive, it was often used as the parent case for wildcatters, and even reformed into other cases that could otherwise be purchased commercially. If it was obtained at a good enough price, it was worthwhile to take the time and make it yourself rather than shell out the cash for factory stuff.
Almost forgot, the number listed along with the LC is the year of production. 1942, 1954, 1968, etc, would appear as LC 42, LC 54 or LC 68. There were several other Army Ammo Plants in that period turning out brass as well, St. Louis, Twin Cities, etc., so you may see some other headstamps as well.
Hope that clears it up!