Is .303 British faster than .577/450 Martini-Henry?

.303 British is faster — up to 2,690 fps versus 1,450 fps.

Does .303 British hit harder than .577/450 Martini-Henry?

.303 British carries more muzzle energy (2,600 vs 2,244 ft·lb).

Compare / .303 British vs .577/450 Martini-Henry

Cartridge comparison

.303 British is faster (2,690 vs 1,450 fps); .303 British carries more energy (2,600 vs 2,244 ft·lb); .303 British recoils less.

Representative trajectory · 100 yd zero0–800 yd

Representative trajectory · 25 yd zero0–200 yd

Is .303 British faster than .577/450 Martini-Henry?: .303 British is faster — up to 2,690 fps versus 1,450 fps.
Does .303 British hit harder than .577/450 Martini-Henry?: .303 British carries more muzzle energy (2,600 vs 2,244 ft·lb).