A calorie is a measure of energy expenditure and stored energy. The calories referred to in diet (calories eaten) and exercise (calories burned) are kilocalories (kcal). One kilocalorie is equal to the amount of heat that will raise the temperature of one kilogram of water by one degree Celsius at sea level.
Break-In Procedures: 1  Clean barrel after each 3 shot group for the first 60 shots or more if needed. 2  Check to see if there is any visible copper fouling. 3  Take one of the clean dry bore snakes, soak with copper solvent, and run it through the rifle from chamber to muzzle 3 times and let sit for about 10 minutes.
As the steel barrel blank is drawn through the forge you can hear the point at which the hammers start to swage the billet onto the tungsten carbide mandrel in order to impart the exact form of the rifling into the bore. A 60cm long smooth bore barrel blank is roto forged into a 72cm precision rifled barrel blank. The forging process aligns the molecular structure of the steel along the bore line and work hardens it to form a tough yet ductile barrel.