That sounds like a neat idea, always thought about a long range handgun...
Here in Indiana, we are subjected to SHORT range firearms for hunting deer..
inaccurate, rainbow tajectory shotgun/slug combo (not any better than a good 300 fps bow), muzzle loaders, and pistals, mostly 357's, 44.s and 35 remingtons etc...
NO Rifles for deer... the loophole is you can use any caliber for handguns... as long as the case/brass is over 1.18 inches, and the bullet caliber is over .243 .
You can use a 30-06 XP-100 single shot pistal with a 15-16 inch barrel, but not a 30-06 rifle with a 16+ in barrel...
So the argument of the danger of bullet travel is mute..
I have thought about it, but the problem is those handgun scopes are dinky low power crap... they have dinky dinky dinky dinky objectives that bring in little light in low light conditions in the dusk and dawn times where most harves5t thier deer..
I have considered a rifle scoped handgun, with a heavy barrel, a break and minimal caliber to reduce recoil so I can use a rifle scope.... a .257 robers might be efficent from a 16 inch barrel..... maybe a 6mm PPC if it has enugh power for deer past 500 yards.. Do not want scope to come back on recoil... The pistal with a good break would probably have to weight 25 lbs in a good caliber like a 260 remington... 50 lbs for a 270 WSM..
scott