I have been experimenting with various wad thicknesses and lubes. I've tried three thicknesses of leather wads: 1/8" thick, 3/16" thick, and 1/4" thick (see photo below, my fingers are holding the 1/4" thick leather with the two other thicknesses resting on top). For patches, I use .25 thick ticking from Wal-Mart.
On Sept 30, I shot the group shown below using the 1/8" thick leather wad. It was my best group to that date, but I noticed that my shots were about 1" low and about 1.5" to the right of the bulls-eye. I hoped that this aim point would correct for my earlier results that were low and to the right of the bulls-eye.
So I filed the front sight blade thinner, ending in a sharp point at the top. This helped me to better sight on the bulls-eye. I also cut some 1/4" thick leather patches. The photo below show the results. The accuracy definitely suffered in comparison to the 1/8" thick wad. It took a long time for me to find the thicker wads because they carried a full 30 yards down range.
So I cut some 3/16" thick leather wads, changed to avocado oil for a patch lube, and aimed an inch high and an inch to the left of the bulls-eye. I hoped that this aim point would correct for my earlier results that were low and to the right of the bulls-eye. The first three shots hit almost exactly at my aim point, so I aimed directly at the bulls-eye for the next two shots and hit my aim point (see photo below).
Lessons Learned:
1. Very small and seemingly insignificant changes may affect accuracy profoundly.
2. 1/4" thick leather wads probably weigh too much.
3. I doubt that the avocado oil helped accuracy. However, there may have been slightly less fouling. Unfortunately, the oil left a residue on my fingers that made it difficult to ram the rod down--it kept slipping in my hands. So I will need to reduce the amount of oil on my patches.
4. Due to the expense, I would not recommend buying avocado oil for shooting. We had it already for cooking because we like to stir fry at very high temperatures. If you elect to buy it, make your purchase on-line--the on-line price is a fraction of the price charged by health-food stores.
I'm happy with the results at 50 yards. The groups look tight and my recovered patches look pristine.