Never Hunted Caribou prior, and have become interested
They are built like a spike elk,i wouldnt go any smaller than a 30-06,you can hunt them in Alaska without a guide,all you need is to hire a pilot to transport you to a basecamp along the migration route,would save you a bunch of money.
What does "gauge" mean anyway? As used here gauge means the number of round lead balls the same diameter as the inside of the barrel (aka the bore) that it would take to weigh one pound. It takes 12 lead balls the same diameter as a 12 gauge barrel to weigh a pound. The smaller 20 gauge would require 20 balls of that barrel diameter. The larger bore 12 gauge would require 12 lead balls of the bore diameter to weigh one pound.
In general the number of pellets in a shotgun shell...