Straight up 260 is a great cartridge.
On DIY builds, if you're mechanically inclined, it's a lot easier than one might think. You'll need a GO gauge in the caliber you choose.
I switched to shooting Lefty and acquired three LH Savage actions, two long, one short.
I picked up a Lothar Walther 260 Rem barrel off here, including dies and brass, also bought two boxes of Lapua brass when I saw it on the shelf. The stock was an Accustock take-off from
@Deputy819. I think components, rifle parts and miscellaneous was ~$700 all in.
The build weighs 7 lbs scoped, is a sub MOA rifle and is now my favorite hunting rifle.
Of the two long actions, I had my gunsmith face off the action, bolt faces and chamber (with shoulder) four barrels (three of which I bought here) : 6mm Rem AI, 6.5x55 AI, 284 Win, and 308 Match. Personally, I hate dealing with the barrel nut.
They are set up as switch-barrel systems, and changing them out takes less than 5 minutes.