Keep in mind that there are no magic numbers for weight, balance, or swing efforts. What you like and/or shoot well are just as individual as stock fit dimensions. If you know what you like, extensions and/or pads, forearm work, and barrel work can be planned for. You can test out changes by taping weights to simulate weight increases. Unfortunately, you can't easily test for weight removal. Weight and balance are frequently planned for and require only a weighing scale and a balance "fulcrum." Swing can also be planned for, but requires moment of inertia measurements. Anything that changes weight and/or where weight is located effects handling.
