i would use no bigger than a .300 win mag and no smaller than a .222 rem
realy what ever fits you best just stay away from the junky models. i would recomend looking around at gun shows or going to a skeet range and ask some of those guys what would be best.
for my last comment i mean in a survival situation or thats the only guns i could have
30-06
.22 (the ultimate caliber)
For the third i would have a 12 gauge not another rifle
A knife should be yellow or orange an a flashlight shouldn't be camo because you could set it down and lose it
A really good squirrel call is the primos 5 in 1 squirrel buster. Out of all short hunts I took in the 2008 season it helped me to kill my limit every time it was used.
The .222 is a good varmint gun but the ammo is hard to find at common places. We reload but every once and a while you have to buy a box for the brass. Now the .223 Rem. takes all the glory. So what ever did happen to the .222?
Chevy/Winchester
The Winchester model 70 (Before they moved from New Haven) tops 'em all
I Think that 30-06 or.270 is the best because they have the knock down power and you can find the ammo any where.