I received Jurassic World Blu-ray.
Owen Grady (Chris Pratt) is seen carrying a Marlin Model 1895SBL lever-action rifle with stainless finish, a gray laminated wood stock and fitted with a scope as his personal rifle of choice in the film. The rifle's sling has some shell holders, which are correctly seen filled with big .45-70 Government soft-point rounds.
http://www.imfdb.org/wiki/Jurassic_World
Well it could have been the modified 50; there is no way to be sure/it may have been this
one ? Although I doubt it since movie people do not usually know rifles well. It still could have been the Marlin converted 50.
The movie was OK, if you like big monsters