You know, taping may or may not cause any accuracy issues. I may be so minicule, that it doesn't matter. But what I have a hard time understanding is the need too? Especially shooting todays sabots. I bet you could fill my barrel to the top with water with me shooting my 250gr barnes Expanders and my powder would be dry as a bone. These newer sabots seem to have an extremely tight fit and along with a 209, rain shouldn't be an issue. I have never taped, but have killed deer in rain. Maybe I am just lucky.

Even if you shoot a conical, I can't see it being a big deal