No I've never mixed natural and synthetic or petroleum oils. Oils are not good for a shooting lubricant because they become very tacky and tar-like in the barrel.
In the field and during shooting, I use the natural lubes in the bore for patches, wads and cleaning.
Here is my procedure to go shooting with one of my rifles that has Synthetic Oil in the bore as a preservative:
Swab 3-4 Isopropyl alcohol patches in the barrel to remove the oil followed by a couple of dry patches.
I don't store my rifles with the nipple installed, so at this time I'll take an alcohol soaked followed by a dry pipe cleaner or q-tips and clean the oil from the flash channel.
Then I'll take a lubed patch with bore butter and swab the bore.
Then a pipe cleaner or q-tip "lightly" lubed with bore butter and swab the flash channel. Not too much or you will create ignition problems.
Then, grease the threads on the nipple or breech plug and install.
Then go shooting. While in the field, I carry bore butter lubed patches along with alcohol soaked and dry ones for field cleaning.
After shooting and back at home, I'll remove and clean the nipple with alcohol and dry.
Then clean the bore with super hot & soapy water (dish or laundry soap with fine about a TBS/gallon of water) and pump flush.
With the barrel hot from washing, I use an alcohol patch and swab the barrel and set it aside to dry.
Every 150-200 shots I'll scrub the bore with a brush and Butch's Bore Shine, followed by a bore shine patch up and down a few strokes. Then re-wash and alcohol/dry swab.
Lastly, I'll liberally coat the inside of the bore and flash channel with Otis 085 UltraBore and wipe the entire outside of the barrel and stock with Clenzoil. I've used clenzoil in the bore for many years with great results and preservative and am trying the Otis UltraBore with excellent results for the past 4-5 years.
Then it's into the gun safe that has a golden rod heater installed along with a 750 gram Hydrosorbent Silica Gel Dehumidifier.
Been doing this procedure for well over 30 years and over 50 years if you count the time my grandfather and father used Clenzoil. I use Clenzoi and Otis on all of my firearms.
All of my grandfathers centerfire rifles and shotguns are still in excellent condition. Some of them are over 85 years old.
:m2c: :thumbsup: