Why must there be? We are talking about small numbers of deaths and a large number of people who want (and/or currently own) rifles.
Sometimes you just need to be practical and look at the numbers. Just because you don't want a rifle doesn't mean a ban has zero cost or that the cost is somehow not a valid one. Many of our fellow citizens want the freedom to own rifles and you should have some respect for that.
The better case for gun control in every possible way is pistols. But nobody will ever budge on pistols if they sense that it's just a "first step" to confiscating rifles as well. The only way to get any kind of gun control is to earn trust by showing respect for ordinary citizens owning rifles, and from that point of respect you can make reasonable suggestions on pistols.