243 Win 80 gr GMX® Superformance® International™Hornady® has been at the cutting edge of ammunition technology for over six decades. Each year our engineers strive to introduce more revolutionary products. In 2010, our pursuit of excellence brought us the technology behind Superformance® ammunition. By blending propellants and manipulating burn rates, we have been able to obtain speeds that until now were unachievable in conventional centerfire rifle cartridges.Superformance International® addresses the needs and demands of the global hunter. In keeping with our tradition of innovation, Superformance International® is loaded with the latest GMX® bullets and chambered in the most popular European calibers. Consider it the new Gold Standard for classic rifles and other timeless firearms found in Europe and all over the world.Product FeaturesProven Hornady® BulletsSuperformance International® ammunition is loaded with Hornady® GMX® bullets for the ultimate in performance, no matter what the game.Progressive Hornady® PowdersSuperformance® Propellants are the heart of Superformance International® ammunition and usher in a new era of performance.Case and PrimerLike all Hornady® ammunition, our Superformance International® rounds use the highest quality cases and primers available. Consistent components translate to consistent shooting in the field.