Does Deep Cryogenic Processing Really Help Accuracy?
Mr. Geza Nagy did an independent and unsolicited trial of the deep cryogenic process for a barrel and published the following results. He was firing a Kelbly built 6 PPC LV Rifle. Prior to treatment, 500 rounds were fired, with many of the target groups measuring between .350 and .500. The barrel was sent to Cryo-Accurizing (a division of 300 Below Inc.) of Decatur, Illinois for the deep cryogenic stress relief process and returned for trial. Five shot groups were tired into six tar-gets. After deep cryogenic processing the average was a very respectable .2245 grouping. His findings? “One thing was clear from the start…. there had been a tremendous increase in the accuracy of the barrel brought about by the deep freeze alone.” (Excerpt from the December, 1994 issue of Precision Shooting.) Residual stresses exist in rifle barrels from the original steel forming or forging operations and additionally as a result of the many different machining operations to finish the barrel. They crea
