Well you already have a hotrod 7mm so why not step up how about the 338 WM or 338 RUM both of witch use your .532 bolt head WM being .532 and the rum .534.
I think Tank is on to something with the 7SAUM, looking for accuracy and barrel life over velocity I think it would be a solid choice. Though I've seen a couple 7mm-300wins that are wicked mean with a 180 Berger and should be stellar with the 195 Berger when it shows.
Not to hijack the thread but anybody play around with a 270-300win? Kinda got the beginnings of an idea to play with one and the heavier 277 bullets coming outgun)
