European Gun Control?

In light of the school shootings at the Sandy Hook School in Connecticut, many have argued that the United States needs European style gun control.  Will this prevent mass shootings?  Lets look at mass shootings in Europe:

Date              Location                   Killed
12/13/11       Liege Belgium                3
7/22/11         Oslo Norway                77
4/9/11           Netherlands                    6
6/2/10           Cumbria England         12
3/11/09         Winnenden Germany     9
9/23/08         Kauhajoki Finland        11
11/7/07         Tuusula Finland              8
4/26/02         Erfurt Germany             16
3/27/02         Nanterre France              8
9/27/01         Zug Switzerland             14

Apparently it's not working.