Ultra Match Barrels - True Flite
We use only U.S.-produced special 416R low-sulfur steel and ultrasonically scanned steel to produce True-Flite stainless steel runs. We do not use potentially unsafe grades of 416 steel produced in Taiwan, Italy, France or elsewhere. Your safety comes first. Our 416R runs are highly machinable, providing superior surface finish and uniform dimensions. The average chromium/nickel content of 12.5% improves corrosion resistance and extends the life of the barrels.
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Important: A Certificate of Tests from our steel supplier is available upon request with the purchase of your True-Flite barrel. If other barrel suppliers cannot provide a CoT, you should exercise extreme caution regarding the steel quality. Below is a chemical analysis of a typical batch of 416R steel used in our barrels (in this case, steel batch number 17):
Carbon 0.11, Manganese 0.36, Silicon 0.39, Phosphorus 0.017, Sulphur 0.10, Chromium 12.26, Nickel 0.38, Molybdenum 0.36, Balance Iron.
The figures shown are percentages. For example, sulphur 0.10 indicates a sulphur content of one-tenth of a percent (not ten percent).
Special notes on barrel steel
Barrel life: There is a widespread belief that 416R stainless barrels have a longer service life than chrome-moly barrels such as 4140 or M200. Our findings suggest that this is not necessarily the case when barrels are properly maintained and not exposed to corrosion. With similar hardness and similar levels of non-metallic inclusions, we see that the different alloys endure the same level of wear.
So why choose 416R?
Firstly, 416R is easier to machine than its carbon steel counterparts, which allows for tighter dimensional tolerances – in other words, it is easier to produce a truly accurate barrel. Secondly, 416R offers improved corrosion resistance, which leads us to…