I have found the S&B large rifle primers to perform just about exactly like Federal 210s.
Bought 1000 during the last "primer panic," and that's what I found during various trials.
Have been through several primer panics since the Clinton one in 1994, when the rumors said "new" primers would expire ("go dud") within six months--which is why some people started burying primers inside PVC pipes. Have a few primers made back then (and even earlier) and they still go bang.
