DEFFINATELY the 270WSM. I own one and so does my brother. Im shooting a Tikka and his is a Browning. Were both shooting 150gr Fusion bullets (mid-priced ammo with great weight retention). @ 100yards with factory bullets im getting .65" 3shot groups and bro is getting .87" 3 shot groups.

Federal Premium now offers its VitalShok in .270 WSM in a 110gr Barnes TSX Tipped Bullet running out at 3400 fps. :) So now the .270WSM is that much better. You have your 130gr-150gr bullets for deer/elk/mooose and the 110gr for those varmints.

Those 110's will kill your moose and any deer that walks the planet as dead as any 150grain bullet ever made.
We are talking a big game bullet in the TSX,not a varmint bullet, and one which will retain close to 100% of it's weight.
150gr x65%(typical bullet weight retention) weight retention is about 97.5gr.
Gee the 110gr TSX still will likely weigh more after all the shooting is over.:D
I know they work, my Mrs. is still shooting the older now discontinued 100gr. XFB's in her 270 Win, moose deer, and antelope all die in a most satifactory manner, so I would hazard a mighty educated guess the 110's should be as leathal if not more lethal:confused: (dead is dead).

I hope this provides some clarification to a often mis understood aspect of the TSX bullets.

Jack O' is rolling over - shame on you for such blasphemy. Oh, and check the ballistics and retained energy, BC, etc. of high end .270 ammo then add a bunch more for the WSM version.

Lazzeroni makes a 257 cartridge that retains more energy at 500 yards than the 270win,270wsm and even most 7mmrem mag loads,yet I wouldn't choose that 257 cartridge over a 7mmremmag for hunting moose or elk.

Then we can agree to disagree and I've changed my mind on the next caliber I'll get myself. It won't be a .257 Roy for sure cause I'd sure hate to go out the door under-gunned (or was it over?)

Absolutely.There are many different cartridges and many different guns available,and we all have the freedom to choose whichever we want to use(within certain legal requirements of course).

Funny that Roy himself shot elk with the .257 and had no issues. I can wager ANY person that I could drop an elk with one out to 300yds. It does not take a backseat to the .270 at all.

I have killed elk myself at over 300 yards with the 257wby,but I was much more selective of the shot that I would take,than when hunting elk with my 300ultramags.

I've had this argument over beer with buddies a few times. Same argument different calibers. I would leave the Lazzeroni out though as they were real good at manipulating ballistic sheets with 27" barrels and 3000' elevation loaded hot. It can be done with others also to be fair. I would buy the 257. I have a MkV 300 and the wife has a MkV 7mm. Very nice old guns. I had a 270 WSM and got rid of it fast. The cartridge seemed accurate enough but it had feeding issues I would not put up with. It was one of the last Winchester M70's before they were kind enough to go under. The guns that get my dollar right now are Weatherby and Ruger.

In all honesty,I think that Winchester missed the boat by not releasing a 257wsm.Such a cartridge would offer ballistics comparable to the 257wby with a much better selection of rifles and much lower priced brass and ammunition.I can't think of a better cartridge for deer sized game.

They tried - didn't work. Glitchy pressure curves, tough to reload, unlike the .270 WSM. Hense, the .25WSSM. Enough already.

I have talked to a few people online that are using 25wsms,and they seem to be happy with them.

Anything with Weatherby stamped on it is expensive!

Keep in mind, you can buy a box of premium .270 WSM ammo, for the same price or less, than a box of empty .257 WBY brass!

270 wsm
 

I hunt moose and deer in the fall and bears in the spring. I primarily use a 7MM stw ( have take 7 or 8 moose 9 black bears and a number of deer ) and have had outstanding results with this round. My son is now 17 and a bit recoil sensitive, recently I looked at the 257 wby for him. I ended up buying a ruger in 270 wsm. The recoil is light and the gun shoots 1/2 inch groups out of the box with hornady 150's. We hunt moose, deer, elk, and bears here at the same time so a bit heavier rifle made a bit more sense. I looked at the 257 vanguard and found it heavy, I think it would work just fine but a bit light for an all around rifle. The 270 is .007 smaller than the 284. I see these as virtually the same round. Full mushroomed they would be basically the same. The only trouble I see with the 270 is the lack of bullet weights, although you can get a 160 in a partition. I do lean toward the 7mm stw with 160 grand slams, as I have had great success with it, I have had no hunting experience with the 270. I guess we'll see how he does this spring on bears.

I want the start Moose hunting and a friend introduced me to a .257 WBY Magnum and i was wondering if it had enough punch to take down the big game I'm hoping for

257 Wby isn't called the Queen of the Quarter Bores for nothing.

I love my Vanguard in that caliber. It's a tack driver.
It's seems pretty forgiving if you reload to. I found several loads that flew very well in my 1st test batches.

Off the shelf ammo is a bit pricey and hard to find sometimes but Cabellas has it for as low as 39 dollars a box.

Haven't shot anything live with it yet but it sure did well against milk jugs of water and the caliber has a lot of fans.

keep in mind that a rifle with a 26in barrel is very awkward in my opinion.

how so? id agree when your in heavy cover, blind or in a truck...
as compared to what?:)
the 16" bbl on my 300wsm is so short its like a handgun, very awkward indeed

i think somewhere in between those two extremes. i really like lightweight rifles although the weatherby ultra light is under 7lbs i believe.