Is 223 and 7.62x39the same

No, .223 Remington and 7.62x39mm are not the same; they are different cartridges with distinct specifications. The .223 Remington is generally associated with the AR-15 platform and is a smaller, lighter round, while the 7.62x39mm is primarily used in rifles like the AK-47 and is larger, heavier, and typically delivers more energy. Additionally, the two cartridges have different bullet diameters and overall designs, making them suitable for different applications and performance characteristics.