Generic Off-board artillery?

I have some more resources for you.

(1) In Sgt Fury's "Atoll Invasion" scenario, he used Naval Bombardment as part of the sequence of play, AND he made a custom card for it.  You can find all of this at:  tsessler.weebly.com/atoll-invasion.html


(2) s1004.photobucket.com/user/dsedivy_2009/media/FW%20189.jpg.html?filters[user]=96109460&filters[recent]=1&sort=1&o=0  I still don't think that ANY aircraft should be able to spot for off-board artillery.  The aircraft should be specifically dedicated to that task.  Check out the "Limited Spotter" special ability on the card that Sharpe created at this link.  

As for the rate of fire, the Ranging In sounds like a good possibility.  The only way you'll know is to try it out.  My take on it is this....Assuming that the off-board artillery is something "bigger" than an 88 for example, there needs to be some way to account for the slower rate of fire.  An 88mm could fire 15-20 rounds per minute compared to the 15 cm sFH 18, the standard German heavy howitzer of the war.  That one could only be fired at a rate of 4 rounds per minute.