Now that I think of it this gun probably was 9.3x72, but I had not considered that it would regulate close to a double rifle POI POA with slugs, making it a more interesting piece.
Brennekke slugs for 16s are available in2.5"? (I'm off to google that now)

The odd side saftey is also a concern for me on quick shots, and one poster mentioned he has some problems with releasing the safety quicky. Is that a general problem to these guns?

Values on these guns seem to range between 1900-2500 without scopes, and this one is offered at $2500- does that sound about right? (Unfortunately I have no pics as when I visited the shop I merely glanced at the gun and then it began to wear on me as time passed so the details are sketchy my apologies).