I stopped at the range the other day and there was someone there with a muzzleloader. They had stopped at the range to discharge their muzzleloader. I noticed the guy had a piece of black electrical tape on the end of the barrel. I asked him about it and he said it was there to protect from wet weather. He said he never had a problem with firing it like that but I'm wondering if that would be a bad idea for two reasons. First of all I'm wondering if it would be a safety issue. And secondly I'm wondering if it would change the point of impact if you had not sighted the gun in like that. Any comments on this?