The Firing Line Forums - View Single Post - Do Test Groups' MOA Size Change With Range?

stagpanther · July 15, 2019, 02:45 AM

My tests have been on AR's--which are difficult because most of the chamber is usually covered by the barrel nut--and many of the barrels are made of SS416 which supposedly has an "erratic" molecular expansion and contraction behavior compared to say conventional 4150 CM.

July 15, 2019, 02:45 AM	#79
stagpanther Senior Member Join Date: March 2, 2014 Posts: 11,786	My tests have been on AR's--which are difficult because most of the chamber is usually covered by the barrel nut--and many of the barrels are made of SS416 which supposedly has an "erratic" molecular expansion and contraction behavior compared to say conventional 4150 CM. __________________ "Everyone speaks gun."--Robert O'Neill *I am NOT an expert--I do not have any formal experience or certification in firearms use or testing; use any information I post at your own risk!*