Hello all, I recently picked up an older L61R in 300 win mag. It looks to be a nice gun and I am looking forward to shooting it. I have a Zeiss HD in 3-15x50 that I plan on mounting on it. I already have a set of optilock high rings so all I will need to get is a set of bases. Does this rifle take the long or extended base? Did Sako change the dovetail size on the L61R at any point or time? Simply put if I get the Optilock mount for a L61R will it fit all production years?