RE: Tikka rifles
UncleNorby explained it well! The benefit of using a short action caliber is lost in the T3 because it only comes in a magnum length action. This should not really affect the quality or accuracy. It is just that to me, if I'm going to shoot a short action cartridge, I want all the benefits of the short action caliber, matched to a short action gun!
Tikka designed the T3 this way to keep the price down. The T3 comes in short, standard, and magnum calibers, while the gun itself, (action and magazine) comes in an action size that can fit all three-- the magnum length! That way there is no down time and retooling at the factory between caliber runs.
If I were looking for a magnum gun, I'd consider the T3, but not for a short or standard length caliber!