In France there's an ammo maker named Sauvestte I believe. Interesting story about them but in Europe they are very popular. Their brochure shows a Cape buff that was taken with one of their shotgun slugs.

They make a host of rifle caliber ammo with bullets similar to Barnes and have a pattent on them. Check them out. They got in touch with me about marketing their ammo in America and I referred them to Cabela's but it went nowhere. Nice guys.