Update: 11:35 a.m. June 19

The Oregon Supreme Court on Monday certified the ballot title for an initiative that would require gun owners to store the weapons with trigger locks, cables or in a locked container.

Supporters of the proposal can now begin gathering the more than 88,000 signatures they must submit by July 6 in order to get it on the November ballot.

Relatives of two people killed in the 2012 Clackamas Town Center shooting are among the chief petitioners. The campaign has a website, oregonsafegunstorage.com.

In addition to regulating gun storage, Initiative Petition 44 would require firearm owners to supervise children using guns and report lost or stolen firearms to the police within 24 hours.

Anyone who ignored the gun storage requirements would be liable for injuries caused with the weapons, unless the injury resulted from self-defense or defense of another person.

The ballot title for Initiative Petition 44 reads: "Requires firearms be locked during storage/transfer, loss reported, minors' use supervised; imposes penalties/liabilities."

The court issued its ballot title decision after receiving only the initial filings from the National Rifle Association and other gun rights and hunting groups. They had appealed on Thursday for the court to change the ballot title written by a lawyer in the office of Attorney General Ellen Rosenblum.

"The Court concluded that the ballot title certified by the attorney general substantially complies with the statutory requirements for ballot titles contained in (state law)," acting deputy state court administrator Phil Lemman wrote in an email Monday afternoon.

The Supreme Court is still considering whether to change the ballot title for another gun control proposal, Initiative Petition 43. Members of the same gun rights and hunting groups had earlier appealed for the court to modify the attorney general's ballot title for that initiative, which would ban the sales and manufacture of a broad range of semi-automatic firearms and high capacity magazines in Oregon.

Initiative Petition 43 would also require current owners of the weapons to pass a criminal background check and register with the state in order to keep their firearms.

The Portland-area clergy backing the proposal realize they will face an incredibly tight timeline to gather the necessary 88,184 signatures by July 6, so they are planning a "Signing Sabbath Weekend" June 29 through July 1. The court does not have a set deadline to finish its review, but Lemman wrote that state law does require the justices to act "expeditiously to ensure the orderly and timely circulation of the petition."

This story has been updated to reflect the following clarification: The Oregon Supreme Court did hear from the gun rights and hunting groups that asked for changes to the ballot title for Initiative Petition 44, to the extent the groups outlined their arguments in initial filings last week.

-- Hillary Borrud

503-294-4034; @hborrud