All I know is that I liked having the 375 Ruger when I went after AK grizzly bears.
When I booked the hunt my guide said either my 30/06 or the 375 Ruger would be fine. The Ruger would be a better choice. I used factory ammo 270 grain Hornady SP. The bear was slightly quartering facing me. The bullet entered just inside her left shoulder & exited behind the right shoulder. It took out both lungs. The exit hole was about the size of a half dollar. She went about 30 yards before she piled up. The shot was right at 90 Yards.
Those minutes when we were looking for her after the shot were pure adrenaline. We were tossing rocks into the brush, saying "Hey Bear". Having the 375 in hand helped my confidence.
My guide carried a 416 Ruger with Barnes bullets.
With all that said----If I had to do it again I would use the 30/06 with 200 grain partitions. I've had that rifle for 40+ years and can shoot it "lights out". Put the 1st bullet in the boiler & things usually work out.
