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41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include chrome-moly, cro-moly, CrMo, CRMO, CR-MOLY, and similar).
Various calibers. available between .22-250 Rem. and .416 Rem., premium wood stock, matte metal finish, buttoning used on rifling for 22 or 24 in. stainless steel barrel, action made from 416 stainless or 4340 chrome moly steel (either left- or right-handed), 3 or 4 shot mag. supplied with 5 shot test target.
It has a clockwise cylinder rotation with a tight barrel-cylinder gap of less than 0.10 mm (0.0039 in). The interior and exterior are made of a hardened stainless steel. The cylinder steel contains a high percentage of chrome. The frame is made of a chrome-manganese steel. The cold hammer forged barrel is made of a chrome-molybdenum-manganese ...
Later, Dan Wesson offered revolvers in stainless steel as well. [2] Barrels and shrouds were constructed of chrome moly steel. Despite the success of the revised design and new caliber offerings, Dan Wesson Arms experienced significant upheaval and ownership changes after Wesson's death in 1978.
Most Bushmaster barrels were 4150 steel, offered in 1:9 twist rate, and chrome-lined to increase durability. Some barrels were available with 1:7 rifling on special order. Stainless steel or chrome molybdenum barrels were available on certain models.
This was particularly true in the 1950s to early 1960s, with the chrome moly steels almost universally used for barrels then. But recent advances with stainless steel barrels, especially with cryogenic treatment, have extended barrel life considerably with the .264 Win. Mag. and many other cartridges. [citation needed]
ORSIS can offer barrels manufactured using one of two rifling processes. ORSIS barrels use 416 Stainless Steel and the Button method. ORSIS SE barrels use 4140 grade Chrome-Molybdenum Steel with the Single-Point Cut Rifling process.
The Ruger American Rifle has a receiver made from 4140 chrome-moly bar stock and a hammer-forged, free-floated barrel with a blued black oxide finish, mounted onto a polymer composite stock. Some models are also available in a stainless steel variant.