I have not Hunted Elk as much as some Hunters here on the Fire but I know what works for me... use 165-Nosler Partition or 165gr hornady Interloc. The few Elk hit W/said load fell over dead or walked off a few feet then fell over.Bullets never recovered,meat for the freezer was...HOOAHHH !!! Never used the newer bullets but will try the TTsx in my T3lite-06 this year to see how they group...ScottyO...