I'm getting off-topic here but I don't see how the .243Win is even in the same league as the .270Win or 7mm-08.
cartridge/bullet diameter/upper end of bullet weight for caliber
.243/.243/100-107 gr
.270/.277/150-180 gr
7-08/.287/160-175 gr
I have to agree with Taylorce1 on his reasoning. But then our opinions come from Colorado with the Roosevelt Elk (largest Elk species). No doubt the .243 with a 100+ gr premium bullet would do the job if the shot is ideal but it is hard to recommend it over a .270 or 7-08.
cartridge/bullet diameter/upper end of bullet weight for caliber
.243/.243/100-107 gr
.270/.277/150-180 gr
7-08/.287/160-175 gr
I have to agree with Taylorce1 on his reasoning. But then our opinions come from Colorado with the Roosevelt Elk (largest Elk species). No doubt the .243 with a 100+ gr premium bullet would do the job if the shot is ideal but it is hard to recommend it over a .270 or 7-08.