" you never know if your gun will jam (mine does every 30-or-so rounds) and it might take to long to fix it"

"You need a better gun or a change in ammo."

"personally, i would choose: a rifle, a handgun, and some kind of knife.
for the rifle, a .223, because it is cheap, easy to fire (sounds like you have never shot a gun, and 22 is easy to learn), and it CAN get into the skull (as long as you are close enough, less than a quarter of a mile), and if you buy hollow point, the bullet will 'explode' as is goes through the skull
9mm handgun for the reason (but you must be closer)
and for the knife, you never know if your gun will jam (mine does every 30-or-so rounds) and it might take to long to fix it, i would get something from 'coldsteel.com' ether a bowie or machete (their machetes are some of the best knives you can get), personally i like the kukri or, and i know i will get flak for this, the katana style because it can get sharper, has a longer blade, and i like the feel of it"

"no you dont thats only like 400 meters, all you need is some training and a good scope and a decent firearm in just about any caliber .204 through .50 cal any of them can make the shot"