got this as a gift for x-mas from my husband.wondering if anyone else has ever had problems with this derringer misfiring?. we bought it brand new and first time out it was misfiring about 10 out of 15 shots. we where using remington ammo 22LR.first few shot off just fine but then it was constant. we figured we'd try federal cause we always had good luck with them but haven't yet.but i'm just wondering if anyone else has experienced this with this gun makes me a little weary thinking we might take it back to the dealer..