I guess I am guilty of over kill. Since a swab the bore with oil after cleaning,I snap a cap and look for the blast impact on the ground, then I fire a blank charge to burn out the oil. This has worked fine for the last 30 years.

The BP subs are more of a problem because they do not burn well with just the powder charge.

I hunt with black powder because I think it is more reliable with the standard percussion caps.

At the end of the hunt, if I am not going out the next day or so, I fire off the load.

As already mentioned, BP or BP subs are both corrosive and need to be cleaned. The subs clean easier but clean up is part of the sport.

Good luck
RPr