Re: 6x45 barrel options.
I have a Sako Vixen bolt action which the previous owner rebarrelled in 6x45. I don't know the brand of barrel, but man does it shoot! Every thing I've tried is under an inch, it just loves 80gb Rem corelokt, which I get to 2940fps, and they have dealt with many wild goats and 2 Red deer so far with auhority. All animals have been penetrated right through, with a good sized exit hole. Ammo is easy - I just run 223 brass through the dies, and don't bother with case forming - straight to work in the field. I love this calibre, and the sweet handling and light to carry Sako Vixen.