i'm in the hunt on a clean barrel camp.i just dry patch the storage oil out of my barrel and make sure my breechplug is dry and load.it does take me a little longer to sight in and if i'm using blackhorn my clean barrel groups are only slightly larger.when i've shot while hunting i'll just reload and then run a damp solvent patch both sides,dry patch and retape the muzzle.this load has always shot very close to the first and i,ll leave this load in the rest of the season ,with no issues so far..........karl