Sierra280, yes, the M118LR ammo's loaded with a Sierra 175. The original M118 ammo introduced in 1964 had the military 172-gr. FMJBT M2 .3086" diameter bullet; the same bullet used in machine guns starting in the 1920's and a few years later in .30-06 arsenal match ammo until 1967. Between these two was the M852 ammo that came out around 1980; it had Sierra's 168-gr. HPMK bullet.
I edited my earlier post on "Sierra" and "Lake City" rifles used by military team members to reflect this. Thanks for your comments that got me to thinking somewhat more precise about the history of such stuff.
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master
Last edited by Bart B.; September 8, 2013 at 04:00 PM.