The question should not bemaximum distance. The question should be at whatdistance does the projectile still have enough energy to ethically take an animal.
At the muzzle the 44energy is around 1600 and at 100 yrds it drops to around 1000. Compared to a rifle cartridge letssay a 300 win mag at muzzle 3500 and 100 yrds 3000.

With excellentshot placement I would say no more then 40 yrds!