One of those Echols customers, former forum member Allen Day said basicly what I typed above about the Failsafe IIRC as has Barsness.
IIRC , Allen Day was impressed with the performance of .300win Failsafes on Cape buffalo and other African game. and I do recall others on this forum over the years who have posted to say AD was a FS fan, detailing the success he had with them.
going back a few more years, Finn Aagaard wrote that he had made the X monometal the go-to load in his .30/06 supplanting the 180 NP.
if folks were choosing an expanding bullet to load in 9,3mm or .375 as an all-round use rifle for Africa, How many would choose a NP over an AF or current X bullet? ...
would they lean toward a disintegrating front section NP that penetrates 20 inches or intact X that goes 30 inches or intact AF that goes 40 inches?
(I have no doubt some would choose the NP out of misguided loyalty .. )
-Bulletproof and Waterproof don't mean Idiotproof.