Sticky?
This ? comes up so much, the answer should be made into a sticky. The key to using a generic bullet is to start at the recommended STARTING load found in your reloading manual for the same weight bullet, with the same nose configuration. IE, hollow point, FMJ,(full metal jacket), SWC,(semi wad cutter).
Of course there's differences in the jacket material, thickness of said jacket and hardness of the core lead. These differences CAN make higher or lower pressures from one manufacturer to another. BUT by starting at the low end of any loading manual, you can work up carefully to max while watching for pressure signs.