Well, the POI changed when I tested it. So, that's two to two saying different results.

However, only one is showing the results on a target. I guess the best thing is to test this on your own gun to see how it comes out.

I know I went to the Saran Wrap, because it didn't affect the POI, but rubber did.

One of those was Jon and most don't really trust anything he says so that doesn't help your case.

The short is, just like everything else in muzzleloading, the hunter/shooter should test if for themselves and should have confidence with the tools they are using.

I know Jon better than all of you. His tests are honest.

Plus, I believe my own test too. Although I only tested one gun.

The first hunt I used my mk85 on it rained for 5 days. When I got home I had quite a bit of rust on barrel where the stock covered it. From that point on I have used Birchwood-casy sheath on all the metal of my gun. I do not run it down the barrel but everywhere else. Since that first hunt I have zero rust on nmy gun. Sheath is now called Barricade. Its works so well that I have no fear at all that weather will negatively affect my gun again. The inside of my barrel gets a light oil patch after a cleaning. Before I go hunting I will fire one cap against a patch, and then run one clean patch down. My barrel on the inside almosts looks new.

I have no change in POI from my rifle when using one of the fingers off a pair of surgical gloves. The muzzle brake requires that I use the full length of the finger. Its like it isn't even there and I've tested at much longer ranges than most will ever test....

agreed. as for keeping the firearm in good condition i'm not sure i've ever considered trying to keep any of mine protected in any way aside from cleaning it well after use and storing it properly.

Well said JohnnyHildo,

I don't worry so much about my guns getting wet because if they do, I strip, dry and then clean them meticulously when I get home after the hunt. Our late ML season can be nasty at times. Here in northern PA during our late ML season (which is flintlock only), most of the time we deal with snow. But, I've seen many times when we've had rain showers that change to sleet/freezing rain or wet snow over the course of several hours. I've lost several opportunities to take a shot over the years because I just couldn't get my sights cleared of those big wet heavy snowflakes in time to take the shot when a deer presented itself.

BPS

Always remove whatever you put over the end of your gun at the end of the day and dry/treat with a rust inhibitor, even if it didn't rain. Moisture collects/condenses under the plastic/rubber and will cause a rust spot on the end of your barrel if left too long.

A condom held by a rubber band works great.

maybe an "extra small" sized condom would work better for you.
a person couldn't pay me enough to walk into a drugstore to buy those tho assuming they even exist lol.