Some threads so far. Still working through the pages.

WWI Sniper Rifle
http://forums.nitroexpress.com/showflat.php?Cat=0&Number=97828&page=0&fpart=1&vc=1

That is a start searching 15 years using WW1 as the search criteria. 526 thread posts.

There is at least one other thread I remember but have not yet found I think.