Is it bad to start force carbonating before letting it settle 24 hours? I add it to the keg, rack on top of it, seal and pressurize the lid, shake a bit, then hook it up to start carbonating.Nah... I usually rack into the keg and put it on pressure to start carbing, but don't add the gelatin until a day later once the beer is cold. Then I just continue carbing until it's done, blow out all the crud with the first pint or two, and have nice, clear beer.
That's exactly what I do. Although, I probably shouldn't use the present tense since I don't really use gelatin anymore.