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11/22/2017 10:05:29 PM
Posted: 9/11/2004 2:21:09 PM EST
Do they exist and who makes em.
Link Posted: 9/11/2004 2:28:04 PM EST
Olympic Arms
Link Posted: 9/11/2004 3:20:18 PM EST
I have played with, and own a few of the OA SS M4 barrels, including one of the MaxHard. They work as well as anything else, and are quite accurate.
Link Posted: 9/11/2004 3:34:26 PM EST
I saw some at a fun show last spring, they were RRA flattops, but I dont know who's barrel they were
Link Posted: 9/11/2004 3:36:55 PM EST
[Last Edit: 9/11/2004 3:38:23 PM EST by az-ar]
Doesn't ADCO offer those?

ETA: adcofirearms.com/rockriver/upperbuild.cfm?page=rra

Yeah, they offer the SS M4 profile option there.
Link Posted: 9/11/2004 3:46:55 PM EST
Link Posted: 9/11/2004 5:13:28 PM EST
saw them on adco site and model 1 has the option or was it m&a maybe both
Link Posted: 9/11/2004 5:15:29 PM EST
Link Posted: 9/11/2004 7:47:21 PM EST
Thanks for the skinny fellas!
Link Posted: 9/11/2004 8:54:03 PM EST
Link Posted: 9/12/2004 6:42:51 AM EST
[Last Edit: 9/12/2004 6:56:48 AM EST by IDHunt]
One thing I have read about stainless barrels is "When the temperature goes down, stainless steel has less fatigue resistance. Its physical properties drop off with temperature. There have been instances of stainless barrels in hunting rifles bursting when the ambient temperature is around zero degrees, or less." Here is where I got that information. It stated that Kreiger won't make sporting/hunting profile barrels in stainless. This has now changed, but if you go to the Kreiger website the minimum profile for a stainless barrel is much thicker than the chrome-moly equivalent. They also specifically state that "It is inadvisable to use stainless steel in very cold temperatures, and 416 stainless should not be used in lighter contours than what we have listed". I would think the extra material in a bull barrel would allow for safe use at lower temperatures. This may not be applicable information to some, but for military use or for those of us that live in colder climates it is relevant. We hit -22F last winter and I have seen -45F without wind-chill in MT.

IDHunt

Link Posted: 9/12/2004 7:29:27 AM EST
[Last Edit: 9/12/2004 7:31:39 AM EST by Gunzilla]
As far as I know, Kreiger does not have a prohibition against using SS for smaller profile barrels, they do however use a different type of SS for them (410? which is 416 without sulfer).

SS is oft maligned and misunderstood... most of the SS you run across in your life is austenitic and is normally very resistant to corrosion, but also prone to cracking (cloride stress) and is often offered in a ductile -- seemingly soft -- state.

Keep in mind that SS was developed for military barrels, but the high carbon steel that was used early on made the SSteels of that day very brittle... today, we have available martensitic (400s) SSteels that rival many tools steels and are the choice for durability in many applications. Also, there are the precipitation hardening SSteels, I would challange anyone to show how a PH is inferior to a high carbon steel in an way? I have worked with 17-4PH to make several gun parts and consider it to be one of the top shelf steels available -- but then, it is also expensive
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