I concur with your in depth forensic analysis regarding the light machine oil on the outside and in nose cavity. Although light enough that it was not leaving a noticeable sign that I could detect when rotated in a paper towel. But, after doing this to several, I think I could sense a difference via the fingers, between then paper toweled and the fresh from the box. Nose cavity oil was found by rolling a corner of the paper up small and tightly, and feeding into the lengthy hollow point and rotating. Maybe 3/32” of the tip showed discoloration.
I assume all their bullets arrive as such. But, I have only heard very good accuracy. So likely not problematic as to accuracy ? Perhaps trace amounts of crisco at the most immediate point of impact expansion on critter ? Not sure if sanitation is necessary. Perhaps soak in Dawn dishwashing water ?? Or just send them.
