You should try a 600 Nitro, side by side double rifle. They do make 700 but never fired one. Bigest thing in my cabinet is a 338 Win Mag. I will put down anything in North America with one round, likes to blow up ground hogs. I almost got a 475H&H but for elk, the 338 had better range and was plenty punch with a 250 grain.

600 Nitro

  • Bullet Weight: 900 grains (58.3 g)
  • At muzzle:
    • Velocity: 1,850 ft/s (560 m/s) or 1,950 ft/s (590 m/s)
    • Energy: 7591 ft·lbf (10.29 kJ)

  • At 50 yards (45 m):
    • Velocity: 1794 ft/s (547 m/s)
    • Energy: 6,427 ft (1,959 m)·lbf (8.713 kJ)
    • Time of Flight: 0.08 s

  • At 100 yards (90 m):
    • Velocity: 1646 ft/s (502 m/s)
    • Energy: 5,413 ft (1,650 m)·lbf (7.339 kJ)
    • Time of Flt; 0.17 s