Yep, If it ain't broke don't fix it.Yep, kind of like coal mining into the mid 1900's......hundreds of years of experience, unimpeded by technology and progress
Seriously though, all kidding aside, I don't shoot conical bullets or anything but pure lead and the only time I have ever had a stuck ball was when I dry balled (Usually from being to chatty while loading) and 90% of the time trickling a little 4F in the vent blows it out, if not a ball puller has always worked and I never have had to leave the spot where I am shooting. Never had to go home or back to the truck.
I may buy a grease gun someday and try and find a zerk that fits in where my vent is, but even then I don't think I will put a grease gun in my shooting bag.
For you guys who advocate the grease gun, do you carry it with you? Take it to the range with you?