While he was shooting, he inadvertently placed a .325 Winchester 
Now maybe it's just me, but when the firearm industry introduced all of these Super-duper, Super-short and Super-long Magnums I thought they were trying to reinvent the wheel to revive a stagnant industry.  Most, if not all of these so-called "Modern" hunting cartridges have already gone the way of the Passenger Pigeon.  Maybe I'm old fashioned but I'll stick with the tried and true rifle rounds.  I personally like the .223 Remington, the .243 Winchester , the .308 Winchester  and the .30-06 Springfield 
Now don’t get me wrong, I also like several of the magnum cartridges as well.  It’s not a secret that I'm quite fond of Weatherby rifles, so I do cherish my .257 Weatherby Magnum, my .300 Weatherby Magnum, and my .378 Weatherby Magnum.  My .257 WM has accounted for several Pronghorn and a Mule Deer or two.  The .257 WM is my top choice for Deer and Antelope.  It has never failed to drop any animal I shot with one round.  
I also think the .300 and .338 Winchester Winchester Alaska Wyoming  with a .300 Winchester 
I know, I know, belted magnums are supposedly passé but so what!  I once owned a 7 M/M Remington Magnum for about 30 years and shot the snot out of it.  The Big 7 was a great performer on targets as well as on big game, but I did feel severely under-gunned with it when I went to Alaska in 1988 and saw Grizzly prints as big as my head.  On that trip I shot a Caribou on a dead run with the 7 M/M Magnum at over 230 yards.  It fell as if a bolt of lightning had struck it.  When I got home from Alaska 
Belted magnums have been around since at least 1912.  That was back during the Holland  & Holland South Gate , CA 
The point I’m making here is that we’ve had a slew of excellent tried and true Magnum and standard game-getters available to us for decades.  So why the fuss over these new rifle rounds?  Ironically, most if not all of these new flash in the pan rounds are already dead and buried.  I think the only ones that seem to be holding on are the 7 M/M and .300 Remington Ultra Magnums.  
The only new magnum rifle round that I believe to be relevant is the .338 Lapua.  Now that’s one Hell of a cartridge.  Ask any British or American military sniper in Iraq  or Afghanistan 
 
