How does the Hart #4 barrel contour compare to the Remington Varmint contour or the Sendero coutour? I need a barrel contour to use for a 300 WM that will be used in the field. I don't want a sporter and I don't want a target barrel. I need something in between. I would prefer a Krieger, if I just knew what the heck to tell them the needed contour was and since they do the 5R rifling now. I want it to be at least 26", but can't seem to find if a longer barrel would be more beneficial for reaching game out to 800 yds. this will end up with a brake on it.