welcome mate have never shot a gunpower stealth but a lot of people use them soo they must be good my local gun dealer said they good guns but i haven shot one sorry i dont live any where near but if you want your terrier to hunt take him out show him some rats,rabbits,squirrels or whatever maybe give him a rabbit fur or if you shoot any thing with your gun bring it back and show it to him it will click or it wont take your time he'll soon start working