If you want a corrective to some of the anti-gun nonsense
circulating since the Aurora shootings, there is no better place to
start than this
well informed piece by Robert VerBruggen.
On whether 1990s-style gun control laws would have prevented the
shooter from obtaining weapons:
James Holmes passed a background check — his worst prior
infraction was a traffic ticket — and although some of his
acquaintances found him “creepy,” there is no evidence that he was
diagnosed with any mental illness. Further, while it’s true that
one of Holmes’s guns was a so-called “assault weapon” similar to an
AR-15, this gun does not differ from standard hunting rifles in
most of the important ways. Holmes’s rifle fires at a semiautomatic
rate — one bullet for each pull of the trigger, unlike a machine
gun, which fires continuously when the trigger is held down — and
uses .223-caliber ammo. This ammo is frequently found in “varmint
rifles”; it is on the small side even for shooting
deer.
What about the magazine, which was higher capacity than was
permitted under the now-expired assault weapons ban?
Mayor Bloomberg is wrong that these magazines have no legitimate
purpose — I personally own an extended magazine for my 9mm pistol;
it cuts down on loading time at the range if you fill a big
magazine before leaving the house. But one can make the case, and
many have, that high-capacity magazines make these kinds of
shootings easier to pull off by decreasing the number of times that
the shooter has to reload or change guns….
However, changing magazines can take less than a second —
here is an
extreme example of a fast change — and someone who takes as much
time preparing as Holmes did will practice doing this. Further,
Holmes’s choice of a drum magazine might have made him
less effective — there are reports that the magazine
jammed, as large magazines are known to do.
The
whole thing is worth a read.