Just to mention, the visual on ground isn t reprsentative of the actual radius. With your current 146%, it s accurate but when you get around 190%, the splash on ground will be nearly the same but will cover ALL the room. It can even go through some walls in certain conditions.
Above 160% cap, the fun begins as the radius starts to bug. a room of ancient blood in HGG is what you ll cover more or less in a single strike.