I'm of the opinion that ramrod tips should not flare. That is a 3/8ths rod ought to be 3/8ths its entire length. If you put a flared tip on the rod, and pipes and ramrod channel normally sized the rod can only go in one way, with flared end at the muzzle. That means to use the rod you must pull it all the way out, turn it end-for-end ram the ball, pull it out of the barrel and turn it end-for-end again and then put it back in place.
If the rod is the same diameter for its entire length the normall brass tip can be inserted into the pipes and channle first, which allows this to happen: the rod is withdrawn the brass tip move about an inch to ram the ball, when that is done it is moved over about an inch to be replaced in the channel and pipes. It eleminates all that flipping around and waving of the ramrod that must be done if the tip is flared. It makes for faster reloads. It's just more efficient.