HSM Ammunition Tipping Point Sierra GameChanger .243 Winchester 90 Grain Spitzer Boat Tail Brass Cased Rifle Ammo 20 Rounds. That describes HSMs Tipping Point to a T. Match grade accuracy combined with a payoff of extreme terminal results. Specifications for HSM Ammunition Tipping Point Sierra GameChanger .243 Winchester 90 Grain Spitzer Boat Tail Brass Cased Rifle Ammunition: Manufacturer: HSM Ammunition Caliber: .243 Winchester Number of Rounds: 20 Bullet Type: Spitzer Boat Tail (SBT) Bullet Weight: 90 grain Cartridge Case Material: Brass Muzzle Velocity: 3252 ft/s Application: Medium Game Primer Style: Centerfire What is HSM Ammunition Tipping Point Sierra GameChanger .243 Winchester 90 Grain Spitzer Boat Tail Brass Cased Rifle Ammunition good for? The manufacturer suggests that it is best for medium game.HSM Ammunition 24321N: Tipping Point Sierra GameChanger .243 Winchester 90 Grain Brass Cased Rifle Ammo 20 Rounds