If anybody's gonna find a way to hotrod a gun/ammo combination...
And push the envelope with respect to safety, it's the IPSC clan. It's no surprise that IPSC players, looking for an edge, would resort to lubing their ammo. Nor would I use them as a barometer for what is safe and sane in the gun shooting world.
I played that game for a while. I saw .38 Super brass that was unusable after the first loading, they were pushing it so hot to make Major power factor.
The compensated race guns needed a lot of gas pressure and volume to work through the smokestack, so folks were running 155gr .45 ACP semiwadcutters on top of massive loads of WW231, WST, WAP, and Clays. Those loads had departed from the tops of published load data and left it standing in the dust.
We have people here (not naming anybody, but I know, and you know who you are) who work .357 Magnum velocities out of .380 ACP hot loads. That doesn't mean it's safe, it just means he's willing to risk life, limb, and eyebulbs in pursuit of whatever goal he's pursuing.
Skip the ammo-lubing. The Japanese tried it with their 6.5mm Hotchkiss machine guns. Even then, it was nothing but trouble in the long run.