Method for loading metal rods or bars to a store depository or stock magazine serving an apparatus for processing said bars, said method comprising the steps of: a). prearranging a preloading structure associated with said stock magazine provided with at least a compartment for storing said bars, said preloading structure comprising at least one vane for containing bundles of bars;; b). preloading at least one bundle of bars on said at least one vane of said preloading structure; c). prearranging a loading device provided with pick-up means (32, 320, 322, 323) for said preload bars, suitable to be set in motion relatively to said preloading structure for picking up said bars and for transferring them to said at least one compartment of said stock magazine; d). operating a relative approaching motion between said loading device and said preloading structure; e). intercepting at said free operative space said preloaded bars in said vane through a relative pick-up motion, with said pick-up means (32, 320, 322, 323) arranged in an active position (32a, 320a, 322a) for supporting said bars; f). operating a relative spacing motion between said pick-up means (32, 320, 322) carried by said loading device and said preloading structure, so as to pick up said preloaded bars from said vane; g). operating a relative transfer motion between said loading device and said preloading structure for transferring said picked up bars to said stock magazine; h). discharging said picked up bars in said at least one compartment of said stock magazine, arranging said picked up means in an inactive position (32b, 320b, 322b) for releasing said picked up bars; characterised in that: - in step a). said vane is realized through a series of longitudinally aligned frameworks, reciprocally spaced, so as to define between two subsequent frameworks and under the stored bars a free operative space, suitable for intercepting said preloaded bars; - in step e). said preloaded bars are intercepted at said free operative space. a). prearranging a preloading structure associated with said stock magazine provided with at least a compartment for storing said bars, said preloading structure comprising at least one vane for containing bundles of bars;; b). preloading at least one bundle of bars on said at least one vane of said preloading structure; c). prearranging a loading device provided with pick-up means (32, 320, 322, 323) for said preload bars, suitable to be set in motion relatively to said preloading structure for picking up said bars and for transferring them to said at least one compartment of said stock magazine; d). operating a relative approaching motion between said loading device and said preloading structure; e). intercepting at said free operative space said preloaded bars in said vane through a relative pick-up motion, with said pick-up means (32, 320, 322, 323) arranged in an active position (32a, 320a, 322a) for supporting said bars; f). operating a relative spacing motion between said pick-up means (32, 320, 322) carried by said loading device and said preloading structure, so as to pick up said preloaded bars from said vane; g). operating a relative transfer motion between said loading device and said preloading structure for transferring said picked up bars to said stock magazine; h). discharging said picked up bars in said at least one compartment of said stock magazine, arranging said picked up means in an inactive position (32b, 320b, 322b) for releasing said picked up bars; characterised in that: - in step a). said vane is realized through a series of longitudinally aligned frameworks, reciprocally spaced, so as to define between two subsequent frameworks and under the stored bars a free operative space, suitable for intercepting said preloaded bars; - in step e). said preloaded bars are intercepted at said free operative space. - in step a). said vane is realized through a series of longitudinally aligned frameworks, reciprocally spaced, so as to define between two subsequent frameworks and under the stored bars a free operative space, suitable for intercepting said preloaded bars; - in step e). said preloaded bars are intercepted at said free operative space.