What does cryogenics do to rifle barrels?

Answer 1

What it does in a nutshell is relieve the stress in the steel of a rifle barrel by freezing at about 315 degrees below zero, subsequently changing the molecular structure of the steel. This process not only straitens out the grain of the steel, it makes the barrel more heat resistant and in the case of a machine gun it would require less barrel changes in combat. It slicks up the bore increasing muzzle velocity and in many cases increases accuracy up to 50%. Bluing on fine firearms becomes more rich and lustrous, while the firearm is just plain more durable and easier to clean. Much like a caterpillar going into a cocoon and emerging as a butterfly.

Uncle John

Cajun Cryogenics