Hello poohbear , i think for deer and bear i would use a 165grain boattail bullet,maybe hornady or speer. As far as elk and moose i would use a something bigger, something like a 300 win mag , something that has more wack .
As far as powder charges u will have to do some trail and error. You have find the rite charge for that gun and what makes it shoot the best. Go to your local gun or shooting range and get a billistics chart and a powder charge chart. This should help you get started.
take your kids hunting and you wont have to hunt your kids.