Haven't tried a Mauser M-18 in 6.5 Creedmoor, but have had one in 7mm Remington Magnum for a couple years. Aside from the easily adjustable (and very good trigger) it shoots very well with a wide variety of bullets and powders--and started doing so right out of the box.
My Mauser walnut stocked M12 6.5x55 is the same.......except the trigger was perfect as it came. Nothing needed to be done except give it a quick clean and mount the scope. I've messed around with a few other rifles the past few years but the M12 is one I'll keep.
