12 gauge 7/8 z hi-velocity slugs?

[Number Six]

I saw these Remington 12 gauge 7/8 z hi-velocity slugs online and was thinking they could worth looking into? flatter shooting? longer range? than 1 oz slugs. Thinking more for survival mode than hunting or big game defense. Anyone have any thoughts about them. they claim 1800 fps and 200 lb more at 50 yards