Have you got an ezi-out?
I've had a couple of stuck shells and that's how I removed mine. You don't have to be an engineer... just go down to your local hardware store and grab a cheap set and with a bit of gentle wrist action you'll be sorted in about 5 minutes. A cheap set won't set you back much.... $20 - $30 maybe?
Good on you for spending quality time with the grandson too. Bloody awesome. I hope I live long enough to see those days... but I was a "late starter" so probably won't be around by the time any potential grandson gets old enough to start wrecking my reloading gear.
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