Considering there are overwhelmingly more of these rifles in the hands of those who conduct themselves sanely and without violence against innocent people, I suggest it might be easier to contain the criminals and the deranged than round up all the rifles.
That said, What is a "high-powered mass shooting"?
How does that compare with a low powered mass shooting?
Define "regularly" as in "regularly kill innocent people in high-powered mass shootings"?
***What is a “high-powered mass shooting”?***
When Harry Tracy broke out of prison back in 1902, he was armed with one of the most lethal firearms of the day. A Winchester 1894 in 30-30. He piled up dead lawmen like cordwood till he was hit and then killed himself.
I don’t remember anyone dancing in the blood calling for a ban on the “evil” 30-30.
In 1962, Thomas J Dodd and Emanuel Cellar proposed a registration scheme for handguns ONLY as rifles were no problem. No not even the .30 Carbine or shotguns.
Then John Kennedy got killed with a bolt action rifle and screams for registration of all firearms began.
again, it is selective outrage.