For well over a year Federal 210M, large rifle match primers have not been available at the local shops I frequent. I've used them for years with in my 243 and 308 reloads with good results primarily with IMR 4064, Varget, and IMR/H 4895.
About a year ago I purchased a brick of Federal 210 large rifle primers and have been shooting them extensively in the aforementioned calibers in several different rifles. I swear I see no difference in performance.
Granted, my accuracy requirements are not as stringent as a bench rest shooter since I'm satisfied with 1/2 to 1 moa levels of accuracy in my hunting rifles. I wonder if any others shooters have noticed any difference.
About a year ago I purchased a brick of Federal 210 large rifle primers and have been shooting them extensively in the aforementioned calibers in several different rifles. I swear I see no difference in performance.
Granted, my accuracy requirements are not as stringent as a bench rest shooter since I'm satisfied with 1/2 to 1 moa levels of accuracy in my hunting rifles. I wonder if any others shooters have noticed any difference.