initiate the forwarding as follows: 

journalctl -f -o export | systemd-journal-remote -o ~/logtest/test1.journal -

now open the sending and the receiving journal:

(Sender)
journalctl -f

(Receiver)
journalctl --file ~/logtest/test1.journal -f


now log some messages:

$ logger "msg1"
$ logger "msg2"
$ logger "msg3"
$ logger "msg4"

(Sender)
Mär 10 14:55:51 virtual-fedora-sbs tpiadmin[25182]: msg1
Mär 10 14:55:52 virtual-fedora-sbs tpiadmin[25186]: msg2
Mär 10 14:55:53 virtual-fedora-sbs tpiadmin[25190]: msg3
Mär 10 14:55:55 virtual-fedora-sbs tpiadmin[25194]: msg4

(Receiver)
Mär 10 14:55:51 virtual-fedora-sbs tpiadmin[25182]: msg1
Mär 10 14:55:52 virtual-fedora-sbs tpiadmin[25186]: msg2
Mär 10 14:55:53 virtual-fedora-sbs tpiadmin[25190]: msg3


the last message is not lost though, if you send a 5th message, the 4th is received.