Slugs are considered for short range hunting only in Germany.
For anything farther than shotgun range, that's why you have the rifled barrel.... 100 yards with slug will be considered way-too-far!
Foster-type slugs are quite unknown in Germany. The standard is "Brenneke". So if at all, the gun will be regulated for Brenneke slugs. It's known that different types and makes of slugs will shoot to different points of impact, one has to test this.
Your results probably would be considered as "not too bad" or "quite OK".
Especially the left shotgun barrel may have a very tight choke. This will be OK for Brenneke slugs, but I would certainly careful before using anything else.
Regards,
Fuhrmann
