The barnes 290g tmz is another excellent choice. The barnes I was refering to are not available prepackaged with sabots. The primary purpose of these bullets is for use in handloading for the 45/70 single shot rifles, they are not marketed to ML'ers. They are hands down the most accurate bullets I've found, and the velocities they are designed for fall right in where you are trying to get. The sabots are (and always should be IMO) purchased seperatly, so you can try different ones and see which sabot your bullet/rifle likes(and its alot cheaper). BTW very nice choice of rifles, you should have a 250-275yd setup in short order.