Re: Sako M995 (TRG-S) .338LM: poor man's base rifle?
The great thing about the TRG-S is it will take the TRG42 trigger and magazines.
I am looking at a TRG-S that is wearing a TRG42 factory barrel. Took just a bit of opening up the factory stock to float the barrel. Not like there is .25" clearance all around but there is enough. The 42 magazines need only a release notch milled up front to function. The trigger is exactly the same, aside from the inside guard lever and the housing.
If you want a 6.5lb Palma profile barrel, get ready to spend the bucks. If you're fine with a #5 light varmint profile especially one that is fluted, TRG-S will work.
The best scope mount for the TRG-S is made by Near Manufacturing in Canada. Unlike USO, Near machines the dovetail slots perfectly and gives 6 holes for securing the base to the receiver. Might be a bit short if you go with a long-body scope design. The Sako Low 30mm optilok is also a good choice, as it is a 1pc unit and enables up to 55mm objectives.
The TRG system is the finest factory action for a switchbarrel gun.
I would buy a TRG42 and order a custom barrel.
As you are stoked on the .338LM, you might consider the .338 Norma. Very likely you could purchase a TRG22, plus a TRG42 13.5mm bolt body from Beretta USA, plus a Lapua Mag 42 magazine. Pac-Nor built me a fine .338win barrel in full Palma contour, threaded and short chambered for about $400. Order a .338 Norma barrel which is a short action ctg and have the ultimate accuracy switch barrel gun!
No other rifle has the versatility or factory accessory line as the Sako TRG22/42.
I looked at McMillan stocks and there is only one they do for the S. Tom Manners was going to produce one, but who knows?
Think of the TRG 22/42 as a superb building block for all your shooting needs. No one does it better. No one gives you more options. With custom barrels, interchangeable kit components and everything else; there simply is no finer rifle system in the world.