currently i have a smk b2 custom but i am looking for something around 100-150 pound which can be used as a good hunter, i got the smk b2 custom to get to grips with shooting a springer but i cant get the scope to keep its zero. i also own a smk B 4 but that got handed to me, so all in all i just want to own a new air gun which will be a good hunter. not to pertically bothered about pellet size 22. 177. will do anyway im from lancashire wigan anyone any ideas?