Sonoran Desert Institute – 416R Stainless Steel – Ruger M77 Mk II All Weather .338 Winchester Magnum

Sonoran Desert Institute – 416R Stainless Steel – Ruger M77 Mk II All Weather .338 Winchester Magnum

My submission for Sonoran Desert Institute FTT 231 Week 2 Assignment. I have done a quick rundown on the basics of 416R Stainless steel and it’s properties.

I forgot to mention in the video that while Ruger does use some cast parts, the barrel is actually cold hammer forged. In fact this model year of rifle 1991 was the first year Ruger began using cold hammer forging according to their website.


RB. “The History of the M77 Rifle.” RIFLE BASIX, Rifle Basix, 29 Dec. 2020,

Carpenter Technology. “416 – Specialty Alloys.” Carpenter Technology, CRS Holdings LLC, 2022,

Editor, The. “Barrel Making: Making a Modern Steel Barrel – Part I.” Firearms History, Technology & Development, Blogger, 7 June 2010,

Hawks, Chuck. “Ruger M77 Mark II Rifles.”, 2005,

Matt. “Rifle Barrels 101: Which Barrels Are Best for Accuracy and Durability?” Dark Earth Tactical, 4 Apr. 2021,

MatWeb. “Crucible Steel 416r Chromium Stainless Steel.” MatWeb: Material Property Data, MatWeb LLC, 2022,

National Rifle Association. “What Is the Best Gun Barrel Material?” NRA Family, National Rifle Association, 31 Dec. 2019,

“New Stainless Alloys Allow Ruger to Hit Machinability, Pressure Targets.” Modern Application News, Apr. 2001,

Ruger. “Instruction Manual for: Ruger M77 Mark II Bolt Action Rifles.” Instruction Manuals, Sturm, Ruger & Co., Inc., 2011,

Ruger. “Ruger M77 Mark II Serial Number History.” Ruger M77 Mark II Serial Number History, 2016,

Ruger. “Ruger Pine Tree Castings.” Ruger Investment Casting, Sturm, Ruger & Co. Inc., 2015,

Ruger. “Ruger Serial Number Lookup.” Serial Number Lookup, Sturm, Ruger & Co., Inc., 2022,

Schueth, Nathan. “4150 Carbon Steel vs 416-R Stainless – Which Is Right for Me?” Faxon Firearms, Faxon Firearms, 2022,


  1. Richard Bozarth on January 27, 2023 at 2:06 am

    .02% adamantium would cure any rusting at all. They might want to consider that.

  2. Brian Wong on January 27, 2023 at 2:07 am

    5:02 tell us your recipe ruger!

  3. Joel Macha on January 27, 2023 at 2:10 am

    So the rifle shown would be prone to have rust accumulation at the junction of the blued rings to the stainless receiver!? Like the ignorant auto manufacturers that so often use steel bolts threaded into solid aluminum castings. Try getting one of those out that’s been in there for years! Good informational content!

  4. Clem's on January 27, 2023 at 2:27 am

    Most likely the people you spoke wuth at Ruger, had no idea either…
    I enjoy the videos, thanks for sharing your experience…

  5. Master Blaster on January 27, 2023 at 2:37 am

    Beautiful firearm 💪🇺🇸👊