Given the cast assembled and the events it's based on, I'm sure you'll forgive me for having at least some expectations for Winchester. Whatever those expectations were though, I can tell you right now, they weren't met. Winchester was massively disappointing, as by-the-numbers as you can get, and if it wasn't for a couple of good performances and the occasional decent effect, it would have literally nothing to offer.
Final rating:★★ - Had some things that appeal to me, but a poor finished product.