So remove the "mentoring" aspect, make it just two hunters. I suspect that a good percentage of the pairs of hunters would be having a conversation about using the other rifle. The issue I am discussing above is not can it, the issue is about confidence and how confidence changes when you get out at the margins.
Nothing about the situation you described sounds marginal to me. Obviously depending on atmospheric conditions (ie wind), shooting position, bullet selection, etc.
At 300yds my 6 creed w/ 108eldm is going 2600fps.
