I'm going to start getting in hunting. im not sure if i should go 270 win or 270 wsm
im starting off with whitetail deer and may go to moose or elk down the line.
I have both. Normally, one will be left at camp while I hunt with the other. I have the 270 Win up for sale on EE. Over time I've come to prefer the 270 WSM over the 270 Win because of the better performance it offers, mainly in terms of energy delivered to the target. For moose hunting my rule of thumb is to have +/- 2000 ft lbs of energy at the POI. With the same factory ammo in the same situation, either in the 130 or 150 gr bullets, the 270 WSM will deliver more energy at the POI than will the 270 Win. In some premium ammo's I can expect just over 1900 ft lbs of energy at 400 yards with the 270 WSM, whereas I expect the 270 Win to deliver under 1700 ft lbs at the same distance. If I had an opportunity to take a 400 yard shot on a moose and had 150 grain XP3 chambered, I would do so with confidence with the 270 WSM. Conversely, I wouldn't try the same shot with the 270 Win. and likely wouldn't go much beyond 300 yards.
The 270 WSM has a couple of other factors that are better than the 270 Win, some of them are marginally better but better none the less. The 270 WSM has a faster MV than the 270 Win which gives greater energy as well as less drop over the same ranges. Also, a 270 WSM will be a lighter rifle than the same model in 270 Win. The weight difference may be only oz's, but I find those ozees sure add up during a long day of hunting.
The 270 WSM I have, an A Bolt, has never failed to cycle properly from one round to the next. I hunt with premium, factory ammunition and practice with the standard, factory ammunition. Ammunition for the 270 WSM, in both grades, is more expensive than the same ammunition for the 270 Win but not so much so that it has turned me away from shooting it. I've never had a problem buying ammunition for either of them. A couple of times neither caliber, of the type I wanted, was available. The 270 WSM does have more felt recoil than does the 270 Win but it is nowhere near an uncomfortable threshold.
I think they are both great hunting rifles. Picking one over the other is a personal kind of thing. If you can arrange it, try and shoot one of each before you decide on one.