Try menu_order, like so:
post_type=projects&order=ASC&orderby=menu_order&offset=1&posts_per_page=100
Vaguely related reference:
http://codex.wordpress.org/Function_Reference/wp_list_pages#Parameters
Try menu_order, like so:
post_type=projects&order=ASC&orderby=menu_order&offset=1&posts_per_page=100
Vaguely related reference:
http://codex.wordpress.org/Function_Reference/wp_list_pages#Parameters