It's the bullet, not the cartridge. Choose carefully.I’m amazed that all the hunters were elk hunting with a 6.5. Seems like a light caliber for elk, and to have multiple people using it, that is unique. I suppose if they all were dedicated shooters with a lot of range experience…
I’m not a fan of a super light rifle. The lack of weight makes them wobble more. And, when you shoot and elk, the 1-2 lbs lighter rifle doesn’t make much a difference when trying to pack out an animal.