Filing the noses off military rifle ammo, to expose some lead, was a pretty common modification when I was a kid. Whether that ammo expanded like a factory soft-point or not, is another story...
The bullet depicted by the OP is a plated bullet. If that's the case, I wouldn't be afraid to expose a little lead at the meplat. If the core is dead soft, you might get a little expansion. FWIW, the Remington UMC 180 grain factory load will occasionally rivet at the nose, when fired into water-filled jugs.
Lordy Ed, it's a wonder some of us ever got old. LOL
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence