I always leave my long range hunting rigs dirty so I know where the cold bore shot is going to go. I was wandering if it will be ok to fire a shot of Blackhorn 209, just before entering the backcountry for up to 10 days, and not clean it? Does anyone have any experience with this? With my Savage MLII the clean cold bore is not too far out of the group but it is generally noticeable.
I've been shooting BH209 since I could get my hands on it. Absolutely love it too. I hunt just about exclusively with the muzz and if not the muzz, its a 1881 Marlin 40-60 but, even that's rare. I've also had stainless barrels since I bought the first Knight that I could get my hands on back in the day.
I always and without fail.........
shoot two fully loaded rounds out of the muzz at the backstop, then load it for hunting and it remains loaded. Here in MI, that's from Nov 15th until Jan 1st. I've left every one of my rifles loaded and a couple years, for the entire season (being picky on what I shoot or wanted to shoot). I've yet to have a single problem with mositure or issues with the barrel/breech. I will admit though, that I've been caught in some pretty heavy all day rains, after which when the day is done, I'll fire the round and just load it back up after wipeing it down.
You could just put a small piece of electrical tape over the end, which will keep heavy moisture out (Kinda like a Shockey thing). I just never bring my rifle into a warm garage, house or cabin. I'll leave the case outside and let it be cold all day then, if I decide to bring the rifle into the garage, I put it inside the case and bring it in. It won't get that immediate blast of warm air and moisture form. Doing with it in the case, the case itself protects it and it won't cause moisture. Just keep a rag with your preference of oil on it, to wipe down the exposed parts. IMO.... you're good to go. I have no hesitation myself.
NOTE: When T/C came out with the Encore rifles, I've shot nothing but Encores or Pro Hunters since.