While searching around for info on rifles built on Sako actions I stumbled on to a thread on the Gunbroker Message Forum from 2003. A gentleman wrote a history of the Colt "Coltsman" series & claimed he was writing a book about them. I couldn't find any evidence that he ever published this book & have know way of confirming that what he says is true & accurate, but it does seem to somewhat follow what many here have said about these rifles. This info is 15 years old, so if anybody wants to add to or correct any info, please feel free. Just FYI! Quoting, "RancheroPaul" The Coltsman Rifle was the New Model & Name for the Colt "57" line of High Power Rifles, & were announced in late 1958. The Coltsman line featured 4 different calibers in 3 models designated as Standard, Deluxe, & Custom. None of these guns were actually made by Colt. The were assembled on barreled actions furnished by Firearms International to the Jefferson Manufacturing Co. of North Haven, CT. The 30-06 & 300 Magnum were FN Mauser Model 300 actions from Belgium & the 243 & the 308 calibers were on barreled actions from Sako on L57 actions. This series of Coltsman Rifles was made in early 1959 & the entire production was completed before the end of the year. Sales were extremely slow & this run provided inventory until 1962 when some models had finally been sold out, leaving some models unavailable to buyers of that time. Jefferson Manufacturing Co. had sold out to a company named Kodiak after a failed attempt to market their own brand of rifle after producing the 1959 run of Coltsman rifles. This new company, Kodiak, purchased only Sako barrelled actions & made a run of Coltsman rifles for Colt in 1963. This production of guns was a redesigned line featuring a Standard & Custom model in the following calibers: 223 Rem, 243 Win, 308 Win, 264 Win Mag & 30-06. There were also a few in 222 Rem, but they were not advertised. This group of Coltsman rifles on Sako actions was identical to the Sako Standard Sporter & the Deluxe models of the time, with the exception of the Colt rollmarks. Only a very few guns were made initially in this run & all were completed by Sako in Finnland. From 1963 to 1965 you could purchase one of these guns, if it was in stock, or you could order it & wait for it to be made & shipped. Because most of these were made to order, the serial number range was not followed nor was it consecutive in any manner. You will find guns in the 30,000 range to the 76,000 range & all in between. It was the "luck of the draw" as each new order for a Coltsman was filled by taking an action off the assembly line in Finland & completing it as a Coltsman instead of a Sako. Price affected sales & public demand (or lack of it), caused Colt to allow inventory to be depleted by sales & discontinued their Coltsman High Power Rifle line in 1965. Depending on the caliber, these rifles came on the L46, L461, L57 & L61R Sako actions. Now the "short answer" to your question: If you have a Sako action rifle in 30-06, it will more than likely be a L61R. It would have been made in 1963, not 1961. If you have a 30-06 made in 1961, it would be on a Belgium FN Mauser action of that era. He then goes on to talk about his upcoming book. I see some errors, I think. What say you?