The reason I asked is that, for the last 3 weeks, I've been running a solo campaign with the 4e rules, to learn them through application.
I've written the campaign so far in narrative form, including Ref's notes to talk through how I applied the pertinent rules. If you're curious, the campaign log can be found here:
https://forum.juhlin.com/showthread....ed=1#post92322
See post #12 to see how I applied the Shaped Charge IED rules queried above.
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