Here's a novel thought, and one that if it even occurs to the anti-gunners, will never see the light of day....
Perhaps. just perhaps, those Senators didn't vote for the gun control bills because despite their high and noble sounding titles, the actual laws proposed were absolute crap.
For once, in recent history, it seems that our lawmakers not only listened to the majority of us (despite all kinds of bogus "polls"), and looked beyond what the bills were called, to what was actually in them. And what was in them not only would not have have had any effect on the recent shootings, but would have infringed on our rights, making criminals of citizens doing nothing more than what we have always done, and what it is our right to do.
All else being equal (and it almost never is) bigger bullets tend to work better.