Jorgy,
50 bmg would be fun as a novelty, but at 33 pounds I' m afraid that I wouldn' t make it far from truck before collapsing so probably won' t work there. So, regarding range opportunities are you from anywhere around Denver?

Colorado Elk,
416 Rigby built its reputation with 410 grain bullets, but I will probably drop well below that for elk this fall, especially if I can get Barnes X' s to work well. The lighter (say 325gr) all copper XFB bullet is longer and shaped better than than jacketed lead bullets of the same weight/caliber (thus a higher ballistic coefficient i.e. .467, about the same as a larger 7mm jacketed lead bullet).

I kind of like the Barnes idea of lighter, faster, flatter and STILL having devastating payload and bullet action on the business end. It could score high on all of the Big Four: Energy (5900 ft-lbs), Taylor KO Index (56), Hydrostatic Shock (2,899 fps), and Bullet Performance (Barnes penetration [usually clean through]; expansion [4 " petal" design]; retention [usually 95+%]).

Per My Point Blank Ballistics Program and Barnes #3 Data:

With a 200 yard sight in:
1.6" high at 100 yards with 5200+ ft-lbs remaining
0 high at 200 yards with 4500+ ft-lbs remaining
7" low at 300 yards with 3900+ ft-lbs remaining
21" low at 400 yards with 3400+ ft-lbs remaining

Recoil:
69 pounds
22 fps velocity
Should be refreshing! [X(]

We' ll see, I' ve got my homework cut out on this one, good thing its only June.

Now for flexibility and cost savings, all I have to do is to learn how to reload, I' ve got all the stuff, just got to get started -- should be fun!

Never Go Undergunned,
EKM