Even the relatively primitive 50/50 BW/Alox lubes are 'Too much of a good thing' on Keith bullets. I had a lot of #429421 bullets lubed with Javelina 30+ years ago. I was playing with one of my 4" 29s at the range one day and posted B-27 targets at ranges from 7 to 50 yards. The lube slinging onto the target paper didn't really let up until the 25 yard line, and was still present. The bullets hit well to 25 yards, but started going 'Full choke' at 50. My thoughts at the time were that lube slinging was probably random and uneven as ^&%#, so once some distance entered the equation the variances induced by the slinging started showing up.
After that session I loaded 100 loads using the same powder charge (9.0 x Herco) from the same W-W brass and CCI #300 primers--but loaded with Lyman #429244 in place of the Keith design. These had only the gas check gap and first lube groove filled with Javelina.
Much mo' bettah. There was only slight lube slinging at 7 yards, and it disappeared at 15. Accuracy was good at 25--about 2.5" groups. At 50 yards the groups were 5.5"-6.5". My thoughts are that lube slinging in extreme examples (like Keith-inspired designs) can introduce variables that nobody needs downrange.
Now for the 'Heresy' portion of my post......I believe that Keith bullets should be modernized. Reduce lube capacity by at least 60% and the crimping groove by 50%, and replace the displaced space with drive band length. I played with that idea years ago on the Mountain Molds' design software and came up with same-length bullets that weighed about 255 grains in .433" diameter. A series of "Improved Keith" designs from 32 to 45 caliber revolvers was my intent, but lacked the capital at that time to have moulds cut.