Pagination on with query_posts in custom post type template

@Milo Thanks, the pre_get-posts seems to work perfectly. I was missing that before, thought my choices were between wp_query and query_posts.

The below should ONLY alter the query on the “rg_blog” custom post type archive, right?

function blog_filter($query) {
  if ( !is_admin() && $query->is_main_query() ) {
    if ($query->is_post_type_archive('rg_blog')) {
      $query->set('post_type', 'post');
    }
  }
}
add_action('pre_get_posts','blog_filter');