I've had my Ruger M77 in standard Hornet since the early 1990's, and was tempted to K it many times in the early years, but once LilGun powder came on the scene, the urge went away.
In spite of my screen name, I won't K my Hornet.
Using a Lee Collet Die, Lilgun powder and a small pistol primer, I get MOA, or slightly better, and 2,850+fps out of a 20" barrel with a 45gr bullet. Brass lasts, and lasts, I'm still using some of the original Winchester brass when I shot 2 boxes (100 rounds) of factory out of it.