"Whippy" and "sluggish" are judgemental and hard to deal with. However, I'd say most people find guns with unmounted swing below 1.1 going toward whippy. Guns above 2.0 are starting to be sluggish. My darlin' NID 4E trap gun (32" bbls and 15 5/8" LOP) weighs in at 9# 2 oz, balances at 5 1/2" to the single trigger, unmounted it swings 2.95, mounted at 11.73. I prefer to think of its swing as "Stately!"