I would probably lean twards the 300 WBY. While it doesn't have the factory selection of the 338 Win, it's not too bad. Definitely more than the 300 RUM that you also mentioned.

Yea at 50 dollars a box for 300wby. Wow, what a deal.

I would not have any qualms about owning a 300 RUM in a Sako 75 and after reading that thread in AR my feelings have been justified ( YES BC the group was .675 at 300 yards a five shot group with a 300 RUM, The LSS shot .75 at 100 yards). Too many people own both and have nothing but praises for them. I have owned a number of Weatherbys and they simply cannot touch a Sako in overall quality/accuracy or a Remington in accuracy. You may have to almost spend as much as a weatherby tuning a Remington but it will shoot . I think the Sendero is way too much gun to lug around Elk hunting or any big game hunting where a lot of climbing is involved , you'll use it one hunt and get rid of it. I used to be a factory ammo shooter a few years back..Anytime I bought a new rifle I would go out and buy 10 boxes of premium ammo in that caliber and 10 boxes of cheap stuff to shoot offhand practice with using a total of sixteen boxes in practice and then having 4 boxes or so laying around for the hunt. When it came to Weatherbys this was a very expensive proposition and until recently I had a small mountain of various Weatherby brass in my Garage. The Weatherbys shot better then average and were consistent and trouble free but they cannot touch a 700 or a 75 accuracywise just no way.

bc- I didn't know we were bargain hunting.

Well, not really bargain hunting so much as there comes a point where it becomes rediculus to shoot. The 30 dollars/box for the RUM is about my limit. The 50 dollars/100 pieces of brass is about my upper limit for a RUM. But with weatherby, they have gone over my personal, and I bet others limit. Especially when there there is other calibers that will match the performance. In other words for me, the ends don't justify the means.

The 300 RUM would out perform both calibers.

IMO the 300 Weatherby is one of the best "do everything" cartridges made.
I can buy ammo at $30.00 a box or roll my own with bullets from 150 gr. to 220 gr.
It's accurate, long range when need be, and just all-around good.
Again this MO.
Good luck and good hunting

I just bought a box of 300wby 180grains for $20.00. I didnt think the price was too bad. They had 150 grains as well.

What brand was that burnie? If weatherby, then thats not that bad at all.

300 wby mag