A .70 calibre would be around 17.78mm. No such cartridge exists.
Yes
200-300 dollars for a firearm with between 60%-70%of its original finish remaining,and a good bore.
70-150 dollars for a firearm showing between 60-90 percent of its original finish.
Not in the public domain
The value of any firearm is heavily dependant on the condition. The Redhawk may be worth as little as $200, or as much as $600.
Try e-gunparts.com
7.65 is .32 ACP
.22 Cal. rifles have very little, if any, recoil and are not much louder than an adults CO2 powered air rifle. If the 10 year old has never shot a rifle or any other firearm before a .22 cal. is the best place to start.
What are you asking?
well the "cal" bit means how powerful the gun is so 17.cal will not be very powerful so it might be used for shooting a bird at close range or target shooting
the effective range on any firearm is going to be limited to your ammo, with the m14 its a 30 cal, best way to get an answer is check a current ballistics chart for that round
$25-$50. Low value firearm.