This is my version of an 8 shot Hammershot Cylinder (yes, eight shot)
This has not been tested, so it may not work as well as intended.
This is also a remix of the following design (which is a non-Thingiverse remix of Horsegnineer's 7 Dart Cylinder):
https://www.tinkercad.com/things/44GPumfPgMO-better-7-dart-hammershot-cylnder