Originally Posted by shortgrass
I have no idea what brand, but, I am certain it is Certified Ordanance Grade. Made in the U.S.A. (would you want to trust steel made in a third world country in court?). Anybody that makes receivers/actions, barrels, or bolts (the stuff that handles the pressure) has a file cabinet full of certificates and receipts for the raw materials they have purchased and used. It's all about liability.
At every alloy steel or Certified Ordanance Grade
there is EXACT the NAMES and marking.
Certified Ordanance Grade
it is the not name steel,it is very important to know composition Mo,Cr,Si,S,P,Mn,C-these indexes influence on longevity of barrel and on his TTD.
Example the breech-block group of Mauser is executed from steel 8620.
I am sure on 100%, that analogical barrel of rifle MarlinXL7 30-06 is made out of steel 4140,barrels MarlinXL7 30-06(22",1:10) and Savage 111G 300WM.(24",1:10) similar,-however on the site of Savage there is not exact information about a producer steel.
Thank you for an answer.