i need to know at what distance can a b2.177 air rifel hit and kill .and what can it kill any one no please help thanks.

What is your main interest. what can a b2.177 air rifel kill

You really should not consider the B2 as a hunting rifle. The B2's accuracy and power are not up to what's needed for clean kills when hunting.
Stick to shooting at tins.
Webmaster.

What is your main interest. f4bscale magic website

That is a little harsh- 10 ft lbs is capable of small game at short range- a friend of mine had a b2 a few years ago and he hunted perfectly well with it at close range rats! However, the webmaster in correct- for proper hunting, something a bit more powerful/accurate is needed.