Using electrical tape over your barrel in bad weather will keep rain snow and tree particles out of the barrel that can cause excessive pressure
Well, the military has been using shoot-away muzzle caps on the M16/M4 since I was a young trainee... they seemed to work. Yeah, I imagine if you put a ton of duct tape or electrical tape over a muzzle there might be some type of pressure build up... but just a few peices? there might be a minor, not quite precipitable pressure build-up depending on the amount as I said, I can say that some of the military muzzle caps were near beaten on to keep them watertight, and I've shot them off with both live round and blanks I don't know of anyone having a problem due to pressure. Just my 0.2 Cheers.
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