Very very flat. I shoot a .280 Rem., Ruger M77 Mark II. On at 100 yards, on at 200 yards and only -4" at 300 yards. This shoots way flatter than the advertised b.d.c. The 150 gr. Nosler Partion really drops the hammer at any range. Huge exit wound on deer. The only negative is my local Cabela's retail store no longer stocks this.
I have been shooting the 140g for years without a faiure. This round is a real stopper ranging from 50 yards out to 400 yards. Puts deer on the ground the 1st time. Great preformance from an excellent caliber!