Various WordPress Feeds for Same Blog

Main distinction between these feeds is not their content, but their type – RSS 2.0 and RSS 0.92 respectively (plus RDF and Atom feeds by the way).

If you just want to dump all RSS 0.92 feeds to site’s main feed it can be handled like this:

remove_action( 'do_feed_rss', 'do_feed_rss' );
add_action( 'do_feed_rss', 'redirect_to_rss2', 10, 0 );

function redirect_to_rss2(  ) {

    wp_redirect( site_url('feed'), 301 );
    die;
}

Not sure how to best handle if you want to redirect individually (for example RSS 0.92 feed of specific archive page to respective RSS 2.0 feed).