You'all see a variety of actions (70, 700, 40X, Stolle, RPA, Barnard, etc) in various types of prone stocks. The days of big magnums have passed, but you'all still see a few 30 cal magnums on the line. Today's magnums are typically a 7 SAUM or maybe a WSM. You'll see 284's, 6.5-284, 243 and a variety of semi-wildcat calibers in 6mm, 6.5mm and 7mm. Of course you have the Palma class which is all 308/223 and strictly iron sights. Then you have service rifles as well in 30-06/308/223.
Most of the major barrel makers are being used, with a 28"-32" Palma or MTU profile being common.
Common stocks are McMillan, Master Class and lots of tube guns from Eliseo coming on the scene. But you'll see various stocks amongst the shooters.