I bought a bag of new Hornady 270 WSM brass and have fired it once with various test loads ranging minimum to maximum book recipes. I fired 15 of those same brass for a 2nd time tonight and had two primers blow out and the shoulder face on most is rippled. The loads I fired tonight were 130 gr Sciroccos medium weight loads per the Nosler loading manual. I assume the issues are pressure related but I've never had brass failure that quickly. Is this common with Hornady?