One and the same. Yeah sure! I've been reloading for almost 60 yr's and found you can learn something new all the time. Recently purchased a Browning BLR in 308 Win cal with a handfull of loaded and mt. brass. I usually lile to use same mfr's brass when working up a new load. I'd heard that Gov. brass was heavier than commercial. Here's what I found.
WRA 65------------------------- 181 gr.
FC 308 WIN ------------------- 181.5 gr.
RP 308 WIN ------------------- 174 gr.
WW Super 308 WIN --------- 159 gr.
Wakeup call. You would have thought the 3 commercial brands would have been closer. Ken Waters wrote an article in the Feb 1967 Shooting Times called (CASE CAPACITIES). His findings vary a little, but are close to this. I looked on EBAY under 308 WIN and 7.62 Nato and found almost 4 pages of usd dies. I wondered how many were put up for sale because of erratic performance.
Would appreciate any comments and am looking for some once fired Winchester brass. Thanks CW