I sort just about all my rifle and handgun brass. When I first started shooting my springfield armory 45 i did not have much money and since a lot of the shooters did not reload they became my source for extra brass. Was a bad day that I did not come home with at least 2-300 empty cases more than I had left with. So basically all cases regardless of headstamp went into the same bucket.What I did do with the 45 brass was sort it and the oddballs that only amounted to less than 100 cases got put into another bucket. All the speer,rem,ww,federal the big 4 were loaded and shot at steel plate matches. The good stuff like wcc match got saved for a rainy day. And I have to say that shooting mixed headstamped cases showed me that there is little to no difference than that of only one headstamp. We'd fing fiochhi, tzz Israeli, mfs hungarian and a few others like sellier and bellot. The s&b's went into a special box for another rainy day. About the only thing bad with the s&b brass was that it would not accept a large pistol primer easily. Took the deburring tool for doing casenecks and chamfered the opening of the primer pocket. After that no probalems. Frank