Thompson Center Encore Barrel7mm Remington Magnum 26" Weathershield® Fluted- A chromoly (blue) steel barrel with ceramic exterior "Weathershield" coating that fits TC Encore and Pro Hunter frames. Many shooters prefer the metallurgical characteristics of chromoly (blue) steel to stainless steel. Weathershield barrels combine exterior rust protection with a chromoly rifle bore... The best of both worlds.