ka9fax,
You may wind up pleasantly surprised by the S&B's. I know I've found that to be the case with the inexpensive Russian KVB primers sold by Tulammo and Wolff. They are harder to seat, having burrs on the edges of their crudely trimmed cups, and a couple of lots have exhibited issues with reliable ignition or having the anvils fall out in the box (one lot of Wolff), but as far as ignition goes, they produce sub-10 fps SD's all the time for me, even in .30-06 loads that don't fill the case perfectly.
Board member Slamfire has put up some data from the Garand, showing KVB primers producing lower velocity spread than even Federal Match primers do. The Russians have a long running love affair with target shooting competition (even their big high schools have shooting ranges with full-time coaches and armorers). Say whatever you want about Russian politics, they do know how to make a consistent primer.
What I am hoping, not having run tests myself yet, is that, as residents of a former Soviet Block country, S&B's primer makers may have some of that same target precision tradition in their bones. So let us know how it goes when you run them through a BR rig. I'd like to learn if they can keep up with the Russians.