I have a 270 wsm and love it. It’s a tikka t3 and is my primary hunting rifle. I’m sure that the feeding issues can be a very real problem with many other rifles out there but that has not been the case with the tikka. I believe it probably has something to do with the single stack detachable magazine. Mine feeds wonderfully from all of my magazines (both factory and aftermarket)

I haven’t found ammo or brass to be a problem to find. Federal gold medal match primers I prefer are another story!