I've used 1 Ballistol : 6 water for many years with nary a problem re fouling buildup or accuracy. However, I wouldn't use it for a hunting lube because I don't want a wet patch atop my powder charge when I may have to wait for more than a few minutes to fire the gun. For that, a grease lube/patch is much better. As there are at least a bazillion types, both commercial and home brewed, I won't say much more about them. However, Stumpy's Moose Snot* works well for me and is quite easy to make.
*Stumpy's recipe uses castor oil, which can be hard to find. When I asked him (via e-mail) whether olive oil could be substtuted for the castor oil, he replied that other oils, e.g., canola, olive, peanut, could be used.