Re: 600 yard hunting rifle????
In my opinion I would go with the 7mm mag. It's faster, flatter, and higher BC bullets in respected weights. As far as the gun it's self I would not go with a Tikka for the reasons mentioned above. If I wanted a brand new rifle I would most likely go with the Savage Long Range Hunter mentioned above however I think the best way to go would be find a used savage with a magnum bolt face for cheap $250-$300 and buy it then get a custom barrel pre threaded to your savage action $400-$500 then have a smith install and headspace it $100-$200 and now you have a gun that you know will be capable to shoot for less than your budget of $1000. Doing it like this also let's you customize the barrel in the length, contour, crown, and twist you want. Just an idea