We already have! The old style magazines that work for Royal and Streamline series Work flawlessly out of the Crown as well. Best regards Johan
The smaller Springloaded magazines such as the ones in the picture in this link. http://www.fxairguns.com/2014/11/fx-mini-magazine/
Ken, were you given a delivery estimate. Did not know they were actually making the crown in 177 yet
I bought a .177 walnut a few weeks ago.
I'd bet that if you where to make a spacer to fit under the royal mag you could use it. The crown sets the pellet hole a tad higher at the breach. Maybe a brass shim and 3m trim tape on the royal mag.