After cleaning with soap and water, I use a non-petroleum-base oil (like olive oil, bear oil, etc) to oil my bore. Store muzzle down. I never pop a cap before loading.
In 5 years and thousands of shot from my GPR I have had 4 missfires.
The first time was because I did not properly clean the gun after shooting the day before. My fault.
The 2nd and 3rd were right in a row while trying to shoot a nice buck last fall after I had failed to properly clean my nipple. My fault.
The 4th was just recently when I got a cap with nothing inside. Remington's fault, but I shoulda checked.
The way I see it, if I did my job and cleaned my rifle properly last time I shot it, and pay attention to the details while loading, the rifle will go off.
It's always smart to run a patch down the barrel before loading after your rifle has sat for a while. Put it on half-cock first and listen/feel for the air hissing out the nipple. That tells you the nipple and flame channel are clear. It also confirms that the gun is not already loaded and the bore is not obstructed.
Your mileage may vary but you've got plenty of time before deer season to try whatever you think will work. :thumbsup: