Less recoil, flatter shooting, and further terminal range with the 116 TMK in a 6 creed. The only area 25 creed and a 134 ELDM wins is wind deflection.
I hunted with a rebarreled tikka in 6.5 PRC the last few years and just put together a 6 creed for this upcoming hunting season. I wish I would've jumped straight to 6 creed, but I'm slowly embracing match bullets and small cartridges. 300 WM to 6.5 PRC was at least a good initial move. I won't go any lower than 6mm due to CO and WY elk minimum requirements.