I wanted a little more muzzle weight in the Kodiak. I didn't even know it had the lead cylinder inside the butt, until I was re-finishing the stock and the orbital sander loosened the lead slightly and it buzzed/rattled, inside the stock. After removing the lead, the balance was much better - a little muzzle heavy which I liked for offhand shooting.
Taylor was right about the regulation - the barrels shot perfectly parallel with 110gr. 2f and .574" ball. With only 100gr., it put both barrels into a single group at 50yards, which meant the barrels were slightly crossing, but only 1" apart in the group centers, at 100 meters. Thus, groups with 110gr. and 100gr. were identical at 100 to 125meters or so- trail walk or deer shooting perfect.
I shot the rifle at Hefley Creek range with 110gr. and it shot perfectly with one sight, right to 250yards on their gong targets - used to love double tapping them (at our range - bang/clang/bang/clang).
So- lead in the butt to get the weight back towards the hands, some people like. You can also lead the forend (sometimes) if more weight if needed there.
For offhand shooting, a little forward balance usually helps. For bench or prone shooting, centre of balance, but heavy weight usually helps.
Peoples likes and dislikes can also be quite different. Try to shoot what works for you. If you don't know yet, have fun finding out by shooting more.