The shots get bigger, more powerful nd travels further the bigger you get. You will get moved a greater distance when you get shot if you are small.
The only players that can have a significant impact with their shots on bigger players are other big players or smaller players that are cooperating.
When players get killed they drop all of their gems on the map. The best way to get bigger is to collect the gems from big fallen worms.It can be beneficial to save you boost for collecting gems from fallen players or emergency situations.