for rabbit i would use #6 pellets .most companies make it easy the box will say light field load,for those mutant rabbits try #4S For deer use slugs,you need to buy a couple different types and go to the range im going tomorrow to do the same i have 10 different brands,you dont need that many .I just like shooting and this is "research" so its justafied
Now therefore take, I pray thee, thy weapons, thy quiver and thy bow, and go out to the field, and take me some venison.
Genesis 27:3 "The thinking deer hunter should mature through three phases during his hunting life. First phase, "I need to kill a deer." Second phase, I want to harvest a nice deer. And last phase, we must manage this resource so our children and their children can experience the grand tradition of good deer hunting." - Jim Slinsky