muley the only way to decrease a bullets wind drift is to make it go faster, and that means magnums!

As far as the bipod, I simply wouldn't even think about going after 'lopes without one! My brother and I both had them on our guns lastyear in WY and both of the shots we had (his at 300 and mine at 367) were relatively quick, his buck was chasing off other bucks and mine was following along with the herd as they were about to move off. We would not have had time to make a rest (and out of what I don't know, there was only sage brush and alot of dust out there). I likewise used mine on my muley, though he was less than 100yds and I had plenty of time, the old saying goes "if you have a rest USE IT!".

I used a Caldwell that is just like the Harris bi-pod that affixes too the front sling stud of the rifle stock. It is adjustable for both prone and kneeling. They add a lil weight but in typical 'lope country weight really isn't a problem (you'll probably be driving around alot) and you certainly don't have to worry about snagging it on brush because there simply ISN"T much around in the plains.

Good luck,
RA