Defensive use of a handgun is usually, (but not always) a close-up and personal sort of thing.
What I call an Outdoorsman's Pack'n Piece may fill a different role, where targets can be small game on one hand, or deer sized on the other. You may also be called on to take longer shots.
The 4" model has a longer sight radius, and the adjustable rear sight can zero any load for whatever distance you choose, and readjusted if you change your mind. The longer length will give you a slight increase in velocity and penetration under circumstances where you need all you can get. Additional weight forward translates into better balance when taking longer shots.
Given your intended purpose I would lengthen the barrel to 5 or even 6 inches. As it is 4 is going to be the best you can do. I see 3 inches as being counter productive.
What I call an Outdoorsman's Pack'n Piece may fill a different role, where targets can be small game on one hand, or deer sized on the other. You may also be called on to take longer shots.
The 4" model has a longer sight radius, and the adjustable rear sight can zero any load for whatever distance you choose, and readjusted if you change your mind. The longer length will give you a slight increase in velocity and penetration under circumstances where you need all you can get. Additional weight forward translates into better balance when taking longer shots.
Given your intended purpose I would lengthen the barrel to 5 or even 6 inches. As it is 4 is going to be the best you can do. I see 3 inches as being counter productive.