I have a Timney on a Winchester M70 Classic Stainless in .338 Win. Mag. Is it a good trigger? Yes. Is it worth it? Yes. However, is it necessary? I don't think so.
Why? Well, let me tell you. If you take a factory Winchester, or even Remington, trigger, and have a competent gunsmith do a trigger job on it, the trigger can be adjusted down to a safe 2.5 lbs with no creep or pull. I honestly can't tell the difference between my tuned factory triggers and a Timney trigger.
Now, if you want to talk about high-end after-market triggers, then take a look at the Jewel Trigger. They are over $200 and just awesome. For hunting, I really don't think that they are necessary either. The only reason that I had a gunsmith install one on my Remington M70 BDL SS DM in 7mm-08 is because the factory trigger was exceptionally junk - a defect if you will - and there was no way that even a trigger job would have helped - the dang thing would swing left to right more than a Vegas showgirl. I would have bought a Timney, but the only thing that the gunsmith had was a Jewell and I needed to have it installed right away and go sight in the gun at the range because I was going on a hunt out of town the following week.
Again, Timney triggers are good (not as great as Jewels, but good nonetheless). Still, you can have a competent gunsmith do a trigger job on the factory Winchester trigger and you can't tell the difference.
Zachary