I am having a problem with coyotes, bobcats and possibly lions killing calves in a small pasture (about 800 acres). It is hard to get more than 1/4 mile from a building and have to always be aware of my backstop. I have some 130 grain bullets cast from a Lyman mold and thought about loading them to about 2,000 FPS. They don't have provision for a gas check. They are cast pretty hard. I am thinking they would be sufficient for those predators but little danger of ricochet or over penetration. Any thoughts on this?