Yea VERY powerful round. I plan on getting a rubber butt pad for it before even shooting it. The surplus ammo is normally corrosive, that comes in large packs. But you can also get some made by Winchester or Lellier and Bellot, and I dont think those rounds are as corrosive. They are also much more expensive. Surplus ammo is about $.21 a round, but Win or Lellier is $.90 to $1 per round, depending on what you get. I think I might just start out with surplus for target shooting, but stockpile a couple hundred rounds of Win or Lellier depending on which it likes better.