Most reloaders stay away from the small primer pocket brass. I have thousands of rounds of large pocket brass and would hate to have a few hundred small ones get mixed in. =havock for those of us with progressive presses. You may notice that none of the top brands went that route? The small pockets have been around for a few years. Most people stay away from Blazer, Starline and cmc... such brands with thin brass, non uniform primer pockets and egged bases.
I'm not saying that what you have is junk, but I hope you didn't pay top dollar for it.
-Steve