In theory, I maybe should've picked up a couple of those Ishapore 7.62's, but as good a survival rifle as a mag fed 7.62 crankbolt can be, it's also a bit big and heavy for that role.
Both Navy Arms, and Gibbs Rifle modified the Ishapore 2A into an improved No. 5 Jungle Carbine form. I say improved, as they omitted the lightening cuts in the receiver, and did away with the infamous "wandering zero" of the originals.
The Browning shown is a good idea. If, that is, shortening the barrel, and the gas system leaves it reliable in times of less than perfect maintenance. In a true survival situation. Not a Zombie Apocalypse, but, rather, a hunter, or hunters, stranded in a wilderness by a failed to pick up plane, or a sudden storm that blankets the area. Even a wreck in an inaccessible area, especially due to a storm, can preclude cell operation for days, due to the combination of position, and interference.
There, the gun needs to operate without meticulous maintenance, and usually, few, if any, of those small, but necessary, parts. It also needs to be reliable in weather extremes (how they got into this mess), and when taking it apart to remove things like ice and water, have to be done by firelight, without a table, on a groundcloth.
There, short of an AK, a bolt-gun may be a better choice for the non-MacGuyver woodsman.