I am a fan of the "Extreme" water bottle also, it's light and portable and you can go through about 26 gal of water before you need to replace the filter.
That's a lot of water to drink. It is priced quite reasonably too.
Anyone who shoots a sabot bullet has had the problem with loading the next round with a dirty barrel we have all struggled with it.
Between muzzleloader shots I have done some research and testing on my own to find out what works for me for the next shot. I have been using a product called bore butter and when the muzzleloader is just sitting around I leave it caked in the barrel for protection. Have also found that if I lube my sabots with bore butter they really slide nicely down the barrel....