Yeethammer Compatible Demolisher Rocket Silly Shell

With something like the Yeethammer, you really do need to be able to shoot ALL of the available projectiles that Silly Shells offer. I submit, for your approval, the Yeethammer-compatible Demolisher Rocket Silly Shell. 

This shell remixes two existing shells (the blank and the Missle shells) and lengthens both the base of the shell and the barrel to better accommodate the dimensions of the Yeethammer shell chamber and barrel shroud. 

I've included two files:

-the first, a printed and tested version, is 225mm in length and functions very well. The drawback to this version is that the rocket seats deep inside the Yeethammer's barrel shroud, and the fins can be bent, misaligned, or broken off due to contact with the shroud. 

-the second file is unprinted and untested, but extends the barrel even further (total shell length is 249mm) to attempt to mitigate this contact with the barrel shroud. It also should fit inside the build volume of the majority of current 3D printers without need for size adjustment (Bambu Studio would not let me go any longer without yelling at me for being outside the useable print volume).