Proposition 63 takes early lead

A California ballot initiative that would expand on some of the nation’s toughest gun control measures is leading in early returns.

Proposition 63 is winning Tuesday with 63 percent of about 3 million votes cast.

It calls for a ban on large-capacity ammunition magazines; background checks for ammunition sales and speeding the seizure of firearms from people who are no longer allowed to own them.

Lt. Gov. Gavin Newsom, the measure’s chief proponent, says the ammunition restrictions and California’s unique firearm seizure program would serve as models for other states.

Opponents say the restrictions would likely confuse law-abiding gun owners.

The initiative would build on limits signed into law earlier this year that also address ammunition sales and large-capacity ammunition magazines.