This reader agrees that it can be done:

Why do we need semi-automatic guns? I grew up on a farm surrounded by guns. Any hunter who cannot hit a running jackrabbit, or coyote, with a single shot 22 is not much of a hunter. Hunting is not a justification!

Look at the statistics! This is a good question for an advanced mathematics class to address. How often has a privately owned semi-automatic weapon saved a life in the US due to the fact it was semi-automatic? Has it happened once this year? How often has a privately owned semi-automatic weapon murdered a person in the US, and turned a disaster into a multiple death disaster due to being semi-automatic?

The following is from the NY Times: http://www.nytimes.com/2012/12/16/opinion/sunday/kristof-do-we-have-the-courage-to-stop-this.html?smid=fb-share&_r=0

“Other countries offer a road map. In Australia in 1996, a mass killing of 35 people galvanized the nation’s conservative prime minister to ban certain rapid-fire long guns. The “national firearms agreement,” as it was known, led to the buyback of 650,000 guns and to tighter rules for licensing and safe storage of those remaining in public hands.

The law did not end gun ownership in Australia. It reduced the number of firearms in private hands by one-fifth, and they were the kinds most likely to be used in mass shootings.

In the 18 years before the law, Australia suffered 13 mass shootings — but not one in the 14 years after the law took full effect. The murder rate with firearms has dropped by more than 40 percent, according to data compiled by the Harvard Injury Control Research Center, and the suicide rate with firearms has dropped by more than half. “