the minimum weight needed to kill elk in colorado would be 170 :P thats what the law makers say anyways LOL.

I'd use a 200gr thor on an elk, its still produces more energy that that 223gr round ball i used previously.

This never does get anywhere, the you should use this because never wears out even after proving them wrong.

As i've said before, its impossible to say the 300gr bullet will kill it faster.