WW brass is as RDW said, it splits nearly every time. It's cheap junk.
I run Norma brass and have never had any type of failures with it in my 7 Wby, 300 Wby or 300 WSM. Those three have a cumulative total of over 1000 rounds downrange. Quality is worth the money.
RP brass is second for me. It too is very pliable and has never let me down.
