This coming fall I am planning a trip up to Canada for some Moose and Caribou hunting. I have been reading up on what calibers to use and I seem to be getting varied results. Even searching on here you literally get everything from a 308 to magnums, suggested.
I wanted to see which y'all would choose and why out of these three options: 308 (I already own and feel comfortable with) / 270 / 300 magnum
Also which brand?
I've shot 3 moose and seven caribou. Most any deer bullet will quickly dispatch a caribou, but moose are as big as a horse, but with longer legs. My 3 moose were shot at 40+/- yds, 22 yds, and 11 steps, all broadside chest shots. Every one of them simply stood there for 10-20 seconds before falling on their nose. They are large and phlegmatic, and it simply takes a moose several seconds to realize they're dead. Here are my moose loads:
.338 WM/210 Nosler Partition in Alaska. Howa 1500.
7mm Remington Mag/160 Nosler Partition in B.C. Sako.
.30-06/ 180 Nosler Partition in Newfoundland. Tang Ruger 77.
The caribou were taken with:
.338 WM/210 Nosler Partition in Alaska. Howa.
.30-06/165 Nosler Partition(2) in B.C. and Newfoundland. Ruger.
7mm Rem Mag/160 Nosler Partition(2) In NWT. Remington 700.
.300 WM/200 Nosler Partition(2) In Quebec. Winchester 70.
I believe that your 308 will do the job quite nicely, as long as you choose a load with a premium bullet along the lines of a partiton, TTSX, or bonded bullet for moose. The caribou will succumb quite nicely to any cup-and-core deer bullet. BUT....all true rifle addicts are looking for a good reason to purchase another gun. Were I you, I think I'd buy a dedicated rifle for Way up North. This would be a .338, .300 Weatherby or .300 Winny (remember, grizzlies live in moose and caribou country). It would, of course, be a stainless gun in a synthetic stock to hold up in all weathers. It would wear a quality scope of 2x7 or 3x9 power, say a Zeiss Conquest 3x9($399 everywhere) or even the underrated Bushnell Elite 4200 3x9(currently $199 at Cabelas...smoking deal). Choose a bolt gun in your favorite brand.
Hope this helps. Have fun!