This is a great excuse for you to get a “Slug Gun”…..not taking anything away from the 870 but that’s just not what it was made for….unless you purchased a slug barrel for the gun? Confidence in any weapon is important and bringing up the shotgun to your shoulder comfortably means the world. It’s got to feel good, you also need to check your length of pull make sure that your index finger isn’t wondering around trying to find out where it belongs J Go to your local shop and pick up every gun you would even consider…unfortunately the more expensive weapons had a tendency to “feel better”
One last point and owning a store I have seen this over and over>>>> we spend so much money getting to the woods on items that are not a high priority, your weapon is.
Buy a good gun that fits you, good ammo and your experience will most likely turn out better and missing an animal with the wrong gun just seams’ wrong.