The Broz guy seems to be talking very long range shooting, which has it's own set of issues. No doubt that much past 450-500, you better select your 7mm bullet and cartridge well, same for a .308 bullet/cartridge too, but arguably to a lesser extent with the heavier bullets available. One needs to make sure you have enough pop way out there. That's one of the reasons a .338 Lapua is very popular for ultra LR hunting, and effective for those that can handle it. But one can arguable a .338 is recently less necessary with 180+ and 190+ bullets in .284 & .308 respectively, specifically designed to perform on game at lower velocities found at very long range.
But to comment further is difficult as all he shares are generalizations. The devil is in the details. A 7mm RM shooting a 140 pill vs a 300 RUM launching 210 grains of bullet would be likely to have noticeable differences on an elk at say 500 - 600 - 700 yards, all else being equal. But make it a 7mm STW with a 180-195gr pill and odds are you'd notice little if any difference vs a 300 RUM with 210 gr. ish bullet at the same ranges.
But it makes for great conversation material.
Here's some added fodder, it relative to brown bear, but comes from an expert:
I make my living cleaning up messes caused by self proclaimed excellent shots and experienced hunter on Brown Bear hunts. In over twenty five years the over whelming majority were caused by the hunter using a rifle he could not handle.
When a hunter shows up with a well worn 7mm or 30-06 and a sensible scope I know he is going home with a trophy.
I don't have a minimum caliber I require a hunter bring but anything less than a .270 is a stunt and anything over a .375 usually ego.
Phil Shoemaker
But to comment further is difficult as all he shares are generalizations. The devil is in the details. A 7mm RM shooting a 140 pill vs a 300 RUM launching 210 grains of bullet would be likely to have noticeable differences on an elk at say 500 - 600 - 700 yards, all else being equal. But make it a 7mm STW with a 180-195gr pill and odds are you'd notice little if any difference vs a 300 RUM with 210 gr. ish bullet at the same ranges.
But it makes for great conversation material.
Here's some added fodder, it relative to brown bear, but comes from an expert:
I make my living cleaning up messes caused by self proclaimed excellent shots and experienced hunter on Brown Bear hunts. In over twenty five years the over whelming majority were caused by the hunter using a rifle he could not handle.
When a hunter shows up with a well worn 7mm or 30-06 and a sensible scope I know he is going home with a trophy.
I don't have a minimum caliber I require a hunter bring but anything less than a .270 is a stunt and anything over a .375 usually ego.
Phil Shoemaker