The selection of ammo and components is a bit better in 7,62x53/4r than 30-30. Sako currently got 5 different factory loads. Norma 1 and Lapua 2, S&B 2 loads. S&B still offers 303 British ammo. 7,62x53/4R is proofed to 56565 psi and 303 British, 52939 psi and 49000psi (SAAMI)