This may be a "never say never" moment, but I looked through all of my Sako catalogs from 1951 thru 1972. Except for one short time frame from 1962 through 1963, all catalogs showed actions and barreled actions as available. The 1962 and 1963 catalogs show actions, barreled actions and barrels available. All of the catalogs, including the 62 and 63, show the length of the barrel on the barreled action to be what we are all familiar with. The 1962 and 1963 catalog show 26" barrels in all calibers as available for the first time. I've seen 375 H&H, 338, 300 H&H, 7mag and 264 with 26" barrels and most were made in 62-63, with a few made in 1964. But I've never seen the L461 or L579 action with a 26" barrel. This is out of the 1962 catalog.