By Bill Wine

PHILADELPHIA (CBS) — Avengers: Age of Ultron followed up its monster box office opening weekend with another strong showing on the summer movie season’s second weekend.

The superhero fantasy sequel earned an estimated $77-million on its second weekend, pushing its cumulative total over the $300-million mark.

A distant second place was claimed by the debuting action comedy, Hot Pursuit, starring Reese Witherspoon and Sofia Vergara. It took in an opening-weekend total of $13-million.

Rounding out the top five with modest returns of about $5-million each were holdovers The Age of Adaline, Furious 7, and Paul Blart: Mall Cop 2.

As for the industry-wide totals, they were slightly below those on the counterpart weekend a year ago.