Three flights on one day. Rocket is very durable. Cannot belive estes says that projected max altitude is 500 ft. On the G80 it got 880, confirmed by altimeter one. 438 feet on a g38fj. Slightly less on an f50. Unkillable rocket. Cut a spillhole in stock chute to quicken descent and avoid drift. Great winter launches, easy find a big red rocket in the white snow filled fields. This rocket is like that old car your Uncle always had that would never conk out!