Free: Contests & Raffles.
.375 ?
I don’t remember signing a non-disclosure agreement.... I think the only thing that matters here is that somebody finally found a use for the 308 win case!
I remember that being done in the 1970's/80's a fellow screwed a 375 Win Savage Brushgun barrel on a Savage 99 that was originally a 308 and opened the barrel to 375-08.