I do think using the zip tie is great idea. Gary, if there is a squib in the barrel, how would you handle that situation?
With a 1911 it would be easier to knock it out from the muzzle side towards the breech. Other guns will be easy enough to quickly field strip. I'm still unsure if it is considered "sweeping" if the course of fire is over, and then there is the distinct possibility that match staff are going to interpret the rules different from me.