I shot the same gun you are going to use during my Wyoming hunt. I used Barnes X-Bullets though. I got myself a very nice 5x5 at about 120 yards. You should be able to get a shot most of the time under 200 yards.
As for optics, I also had the 3-9x40 Bushnell Banner and of course it did the job, just as well as a Swarovski.
Binocs- I had some Celestrons at the time, now I have Loopy Cascades, 10x42, and they are really nice. The Leica Geovids have caught my attention before too, but the price it just hard to justify. I have a Nikon Monarch 800 rangefinder, so between that and the binos I have about $800 in the set, thats still over $1200 cheaper then the Leicas. You could use the money you save and get a real nice spotting scope.