I have never owned a factory 7mmstw but I have shot a factory sendero in 7mmstw.Accuracy was around 3/4" and velocity at 3400fps.The owner was using the exact same load as I use in one of my stw's so I ran a few through my rifle to compare velocities.My own rifle produced 3520fps with his loads.In comparison the sendero weighed about 3/4 of a pound more than my rifle shot groups about 1/4" larger and produced about 100fps less than my custom.As a factory rifle the sendero was as good as you can expect for the money.