Depends on bullet weight, muzzle velocity and barrel length.
Depends on the model and condition, but about $300-$375.
$325-$375, depending on condition.
Size and amount of propellant
i have seen used ones go for $250.00 to $375.oo
$1,600
375/1,000 15/40 3/8
No.
You can only shoot what is printed on the barrel. Mag and short mag are not the same.
this is the same as asking 375 minus 99, very easy, 375-100=275+1=276
375 H&H Mag is a rifle meant for African Safaris. It shoots 270 to 300 grain bullets at 2200 to 2700 feet per second. This is twice as fast, or four times the energy, of 44 magnum with similar bullet weights, which is after all a pistol cartridge, even though used in some rifles. If by some chance you meant 357 magnum and mistyped, that will be about two-thirds of the power of the 44 magnum.
The prefix that has the same meaning as "great" is "mega-".