I made a LR package with a Mark X action which is a modern mauser. Joel Russo worked with me to inlet one of his laminates. Near Mfg has a picatinny rail that fits the action.
I am happy with the end result. Have put two very different barrels on it. Can switch them myself.
Picture shows long throated 338 RCM with 300 gr berger hybrids. Barrel should last forever with 57 gr of RL-17 for velocity of 2550.
Other barrel is a 29 1/4" SS chambered in 7/375 Ruger. 180 Berger target hybrids vel 3175 fps
Intend to use it for a coues wt hunt this fall.