I'll try to explain my statement. Some handguns are built more ruggedly than others. Ruger Super BlackHawks & Super Redhawks are built like tanks. You can load much hotter without fear of damaging the gun. Some load data in fact is listed as for Ruger only. S&W and Colts are rugged to, but have heard of problems extracting cases from hot loads that work fine in Rugers. My Taurus Raging Bull for example is rated for a 240 gr at 1350 fps. Exceeding this would not be advisable and anything but factory ammo will void the Taurus warranty. My Ruger Super BlackHawk Hunter has an unfluted cylinder and a heavy reinforced barrel, I am not afraid to shoot loads from it 100 to 150 fps faster than my Raging Bull. As for my Desert Eagle, it is probably just as tough as the Ruger but It takes longer to recover from recoil on heavy loads if your trying to unload a whole clip on target quickly. I tend to use load levels that work the action smoothly.
My statement about shooting past 75 yds is based on bullet energy required for a clean kill. Rule of thumb for deer sized game is 1000 lbs of energy. A 240 gr load at 1300 fps = 900 lbs of energy leaving the barrel, at 75 yds the energy is 650 lbs at about 1100 fps. Good shot placement will still kill the animal, but leaves less room for error. The same 240 gr load at 1400 fps has energy of 1045 lbs at muzzle and 770 lbs energy at 1220fps at 75 yds. So you need a pretty hot load out to say 100 yds or further, not to mention a little luck to hit the target and maybe a follow up shot. 44 mag energy drops off sharply past 100 yds.
Hope this makes sense but after all, it's just an opinion.
I'm sure not everyone will agree.
Gringo Hunter