I load for 3 Hornets, including an M6 Scout. Neat little package, ain't it? I use Lil'Gun for all and couldn't be happier. My standard load is 13gn of this (you may not be able to fit this into a new, unfired case) under a 40gn Vmax. Some claim pistol primers give best accuracy, but I have not had the best luck with that. I prefer to use a benchrest rifle primer.
The Savage model 40 I use for a lot of prairie dog shooting has shown no barrel wear that I can detect in @ 10000 rounds so far. My opinion is that it would take a lifetime of shooting to wear out the barrel on a Hornet, with any suitable type of powder.
Andy