My experience with WW is they are great for most applications at even high velocitiey loads.  For a hollow point though, I think they're too fragile.  They stay together when cast of a semi-wadcutter or RNFP, but when cast in a hollow point, the nose tends to "shatter," not expand and act like a regluar bullet, less the nose.  I cast 50% WW and 50% lead for my hunting loads in my 45 Colt and have never had a complaint.  The extra lead allows some expansion and is in my opinion, the ultimate controlled expansion bullet for hogs.  For deer, I tend to cast mostly pure lead for my carbine, but in my pistol, go back to the 50/50 mix due to the less velocity.  A 45 caliber hole through and through a critter is hard to argue with.