More than likely, the 22-250 is the most popular; although if you are selling the fur, then .22 magnum is excellent. If you just want to kill them and not have a chance of them getting away only wounded; then the 22-250 is great, and even better than that is the 243 and 25-06(using 75 and 85 grain bullets).
Any of the major makers will have something in that price range.
General rule of thumb is that the best caliber is the one which best suits you. Of the two, .270 would be the more powerful round. Both are substantial for hunting something like deer, although the .243 is probably better suited for the experienced hunter, whereas the .270 would be a little more forgiving to the novice hunter. The .270 is a necked down .30-06, and the .243 is a necked down .308.
squrriel rabbit little birds nothing fancy maybe a coyote depending on what your shooting. i have taken several rabbits with my .177 air rifle but they are best suited for pop cans and such.
any high power rifle will do the job some have there favorites to use but any rifle will work, you could use a shotgun or bow also but most people use rifles
Cabella's has a very good collection of hunting videos,so it would probably spark your inner huntsman if you checked them out.
Nerf gun
Just try your best. Draw a body and add a face and you have a coyote. Don't forget a tail.
Yes, its the best school on earth!
No answer, there are thousands of people who roll hunter and claim they're the best.
.22 Magnum is my fave...
The best Demon Hunter song is up to you, it's your opinion.
IF the 13 year old is a novice shooter, a bolt action .22 is a good starter gun. Relatively inexpensive, very light recoil, it requires a positive action to loadsuccessive shots, and by simply opening the bolt, the rifle is taken out of action. However, my 13 yr old granddaughter has shot with me for several years, is a competitive rifle shooter, and uses a AR-15 in caliber .223. It is important that the rifle fit the shooter physically- beyond that it will depend on the build and experience of the shooter.