This:
150 gr. @ 3550 FPS
220 gr. @ 2990 FPS
Granted, for most applications a 300 win or even a 308 will suffice....but there ARE many things a 300 RUM or it's next door neighbour the 30/378 W can do that your winmag just can't....whether that be throwing heavy bullets at high velocity (My RUM packs more velocity/energy at 300 yards than an '06 does at the muzzle) or setting up a FLAT long range cartridge (Loaded with 160's, the gun can pretty mutch match a 22/250 trajectory wise...and can mimic the 25/06 with heavier bullets than that!)
So in short: At 400 yards or less, not a huge advantage other than being able to throw way heavier bullets than the win...but when you are stretching out past 400, that's where the rifle shines.
At my old moose camp we had a "range" set up in an old cut. Hitting (and decimating) 1 gallon water jugs at 789 lazered yards with 180 sirroco's was almost too easy.
What's funny about the whole "You are wasting powder/money with a RUM" crowd is that most of the naysayers shoot a 300 win....yet when you point out that their logic should apply to their own choice and ask them why they aren't shooting an '06 (after all, they are wasting powder/money with a winmag) there is all of a sudden a whole s**tload of reasons why the winmag is better
The 300 RUM is to the Winmag what the Winmag is to the '06...it's a bigger, more powerful cartridge that shoots flatter, reaches further, hit's harder, and allows the use of heavier bullets without sacrificing velocity....do we need it? Most times no. Does it matter? Not at all. If we were only allowed to have what we "need", every gun would be chambered in 30/30 and .303
Answer your question?
I sort of baited you, but that is pretty much what I thought you were going to would say.
First off I have owned a 300 Ultra and I also own a 30 inch barreled 300/416R AI that is much faster than the 300UM.
Why do I like the 300Win?
Well for general purpose hunting I actually sort of prefer the 30-06. The only significant advantage the 300Win offers over the 30-06 is is the ability to more effectively use the high BC 200 grain bullets.
Which is of little use inside of 400 yards
The 300 Win. sends the 200's with unbelievable long range accuracy at 2950fps. While the 300 Ultra can send the 200's at similar accuracy at 3100fps, at ranges where it really matters I can't see any difference. In fact if I load the 300Win with with something like a 190 Berger or 200 Accubond it will have less wind drift and more retained energy that the 300 Ultra with 180 Sciroccos.
Other than impressing a noob buddy, 150 grain bullets are for 308 Winchesters.
Do your homework.
"Hitting milk jugs at 800 yards is almost too easy"
Well....I'll leave that one alone other than to say that once your dialed in there is no way you could tell the difference between a 300 Win and a 300 Ultra.
It's not that I don't like the 300Ultra (other than the short barrel life I do), but I think if you want more than a 300Win you need more bullet. The big 338's are the next logical step when the case gets that big.
I have a couple of 338Edge rifles and well...lets just say they are like another gear.
