I don't have access to a chronograph so I was wondering if anyone has shot the 123 grain A-Max's out of a 20 inch barrel and could tell me what velocity they're getting
my 20" satern barreled grendel did 2478 low to 2528 high with factory hornady 123 Amax loads, my reloads with 29grs of aa2520 gave me between 2550-2587, with better groups and its much cleaner.