I have a plastic hard rifle case like a lot of people have. I found my rifle moved inside so I looked around for harder foam. I found 3x5 sheets at Princess Auto for $10. I cut it to the shape of my case, then laid out my rifle, bolt and bipod in the arrangment I liked best. I traced around them with a marker, started cutting about a cm into the foam  with a razor blade type knife. I finished cutting through with my hunting knife. In the bipod shape, between the legs, I used a drill bit to…