Huh, I always hunt with my .270 win. But I have this south gate .300 wby that belonged to my grandfather and I am eager to hunt with it. So I bought a new scope for it, and managed to find a few of old boxes of the Norma – Weatherby cartridges with the bear head in the box. These cartridges should be around 50 years old but still shooting pretty well. I can group 1.5 MOA at 100 yards with them.
But, I also had to figure out what to do once I get out of ammo. So a friend of mine brought me dices from the US. Here in Peru you don’t find any weatherby cartridges at stores, large magnum primers, or even suitable powder for reloading. But I managed to find some IMR 4350 and large magnum primers for reloading some 70 cartridges. Next step was finding bullets. It took me 4 months getting these matchkings… The only thing I found.
Here in Peru we have a subspecies of white tail (Odocoileus virgininanus peruvianus) which resembles your Coues deer and another stocky Andean deer specie which inhabits high mountain regions approximately 14,500 feet above the sea level. A fine deer should be weighing approximately 150 to 175 pounds. The .270 does the job flawlessly and it is light enough for carrying it in the mountains. But I still want to give the Weatherby a try. I believe hunting in the Andes resembles more to your sheep hunting, and shots may vary from less than 50 yards to the furthest you are confident hitting.
I think that the high speed should give an instant kill due to the hydrostatic shock as I’ve witnessed when hunting these deer with the .270. But I’ve also shot at longer distances where the .270 did not kill the deer instantaneously but as result of large damage caused by the expansive bullet in vital organs inside the rib cage. However, I don’t know what would happen at similar long distances with a bullet designed for hitting targets rather than for hunting.