The Finnlights generally do not shoot as well as the regular 75 models. Now, I have seen Finnlights that can outshoot a 75, but, for the most part, the 75s outshoot the Finns.
As for the 20" barrels, I am not very fond of them, especially with longer cartridges like the .270. I personally wouldn't shoot a barrel less than 22" inches. If it were a short action, like a 7mm-08 or .308, then it isn't as bad because since the cartridge is shorter, it has more room to go down the barrel.
Zachary
