I am looking into a new rifle?

I have lots of experience with the Winchester M70, its my second favorite hunting rifle, sporterized Mauser is first. I like that the safety is on the bolt rather than on the trigger. I have never used either of the other two you mention. I tried to blow up a Winchester M70 many years ago by accidentally loading pistol powder instead of rifle powder. The case melted and partially flowed into the bolt and the bolt would not open. i sent it to Winchester and they removed the bolt, magnafluxed the receiver and barrel, fitted a new bolt, and sent it back to me, no charge. The receiver was not damaged.

On a side note, you could not give me a sort magnum.

It is never a good idea to buy uncommon chamberings. You never know if they will be supported long-term. If you end up in the middle on nowhere and realize you forgot your ammo, good luck finding it at the local hardware store. A standard .270 is a classic cartridge that will kill anything a .270 WSM will. Any modern bolt action is a good bet with a few exceptions at the very bottom of the barrel, which by your rifle list, you aren't interested in.

You cant go wrong with a Winchester Model 70, or a Remington Model 700, but any major rifle manufacture will have something similar to what you're looking for. Top it with a decent 3-9X scope and you will have a rifle that will last long after you're gone.

Just know that the WSM and WSSM rounds are on their way out. They enjoyed a surge in popularity when they were released, but given that a basic hunting cartridge for a WSM round winds up costing about twice what it costs to buy a standard round, people have apparently realized that they're just not worth it.

So if you do choose to get a .270 WSM, just recognize that you might not be able to find ammunition in a few years, which means you'd have to handload your own. And brass might not be particularly available, either... But you could always buy some .404 Jeffery brass, and maybe somehow work it into .270 WSM, since the WSM family is based off of .404 Jeffery. Right now, 20 unprimed Norma casings for .404 Jeffery cost $51 on Midway USA, and 20 Hornady casings for the same cost $55 on their website. Even handloading, if you run out of a source for .270 WSM brass, you're going to be spending beaucoup dollars.

Anyway, if you want a .270 WSM, go for it. I would choose a Winchester 70 before a Browning X-Bolt or a Tikka, but you need to go see what fits you best. All three of those rifles are going to be good quality.

I have Browning A-Bolt Hunter and Stainless Stalker rifles that I think are very finely made,handsome and they get Sub-MOA accuracy with my handloads. Browning is known for fine workmanship and I consider my rifles to be very fairly priced for the value/features and that I know I can pass them on to my son in years to come. The Winchester M-70 (now made by FN-same umbrella that Browning is under) is an older modified Mauser action that has returned to using controlled feed on most rifles now;build quality is excellent when compared to the last few years of production in New Haven. I think the Browning X-Bolt would be a better choice because of the upgraded safety system (different than the A-Bolt) and the newer trigger design-the A-Bolt trigger is very crisp and can be adjusted, the X-Bolt is even more crisp and clean with room to adjust IF needed (breaks like glass as a good trigger should). For me the classic Mauser rifle to get would be a CZ 550. The Tikka is a very capable rifle,sharing features with the Browning but it isn't quite the same. The T-3 is a "LEAN" manufacturing product with a great Sako barrel but just isn't as solid feeling to me;I've never met a dissatisfied Tikka owner and certainly would purchase one if I didn't have Brownings now and it does have a very smooth bolt cycle and trigger feel.

As for the 270 WSM, I think it is a fine cartridge,it does add to a .277" bullets envelope but unless you reload like me you are going to spend $50+ per box of ammo and the 404 Jeffries based cartridges have short necks so you might run into powder impingement issues using 150 grain bullets at SAMMI COL.

I would just as readily suggest move up 0.07' in diameter to 7mm Rem Mag performance where you have the option of using light to heavy bullets with more factory ammo support. I see as many 7mm Mags as 30-06 when elk hunting.

So, of the 3 rifles you're looking at for me the X-Bolt wins hands down,whether you decide to use a WSM or more standard cartridge.

I have a Featherweight M70 in .270 Win. It kicks quite a bit. I wouldn't go for WSM, but if you must... the M70 is a good one! I hear Tikkas are good, as well. I have heard nothing about the Browning.

M70s are an old and proven design.

And just what the hell do you think a WSM will get you? The ONLY WSM/WSSM that even has a use is the .243 WSSM, and that is only if you want .243 Win in an AR-15. EVERY OTHER ROUND IS JUST MARKETING.

Avoid the short magnum... no advantage over the 06 based 270

I like you choices....all good rifles

Somewhat...but why are you fixated on a hard to find, expensive round ? Wiki it and compare it with the performance of other, cheaper and widely available ones. ( i have shot the last two you mentioned...in 308 and 30/06.....consider those, instead. ) Really, you can't go wrong with any of those makes, though....all good products.