Hate to say it, but on Parkers and on Foxes, I've used the dime test on 12 gauges more then one time. Don't carry my Skeets unless I'm at a gunshow or going to a gunshop to specifically look at a double. However more then once I've walked into a Pawn shop and seen a Fox or a Parker and grabbed a dime to check out whether the chokes are full or not. Not perfect, but better then nothing.

foxes rule