Hey Kyode...how's about a .30 Gibbs?? It's a substanitally improved 30-06 with a short neck adn 35 degree shoulder. In a longer handgun barrel it would be sweet. I have one in a custom Mauser rifle that wings 165gr Hornady IL's at 3100+fps (25" barrel) with RL-22. At 400 yards it stays right around 3" groups which I consider excellent for a light barrled rifle. At that distance that HIL's also work great on deer...took a large doe two years ago at 445yds that entered behind the shoulder and exited at the base of the neck. Exit channel was just over 2"...she never moved. I was shooting from the prone position from a short Harris over a large field. There was a light mist and NO wind...perfect conditions for such a shot.
Anyhooo...I really fell in love with this round after being introduced to it by my 'smith.