I've searched pretty much all the threads on the 12lrp 260, and the consensus was that the throat was to short to put the heavy bullets way out there, but it may be ok for the lighter.
I've switched my desire for the .260 to the 6.5 Creedmoor based on about 2 days of solid reading.
I found 1 thread that the 12lrp wouldnt shoot for someone, everyone else has great reviews.
Good luck!
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