My experience hunting and including Grizzly has led me to have very little faith in the marginal chamberings like .44 Mag. That faith drops to quite low in a defensive situation with an adrenaline charged bear, and shooter. Granted, I haven't used .44 Mag on Grizzly, but it would be highly comparable to .243 for effectiveness, with a much shorter useful range. Many people will scoff and assume you don't know what you're talking about when you say this, as the .44 Mag has taken every game animal imaginable. So can the .243 mind you, and cleanly, just like the .44 with perfect shot placement and holding on inopportune shots. I've done just enough handgun hunting abroad with heavy bullet chamberings to know it's a lot like archery, yes the animals die, not always the way you want or where you want. A .308 looks like the hammer of Thor on game in comparison to the .44 Mag, and few of us consider the .308 a powerhouse. So I'd like something that can easily churn out more power than a .308. I see .44 Mag on big bears as the same thing as .22LR on a mad dog. Probably will work, a lot less than ideal however.
I suppose exposure is a big part of my thinking too, if you run into a Grizzly once a year, a .44 Mag would keep me happy too. Unfortunately (well, fortunately in my eyes, I like having the apex predators about) they'll sit and watch us work from fifty yards, and are encountered very, very frequently.
Cell phone pic from this year of one watching me from fifty yards, just curious what's up.
This was the most exciting bear behaviour I've ever had the displeasure of witnessing, a sow Grizzly with two cubs, not pictured, encountered by accident. She bluff charged, and it's better than coffee. This is also a cell phone pic and hopefully folks know how far away that makes things look, she was smell the breath range by the end of the turn she's starting to make in the pic here.
Then this family, admittedly encountered while Elk hunting, but again a cell photo. I run into an awful lot of Grizzlies and just don't trust something on the edge of enough gun. I've never had to shoot one in anger, hope I never will, but you bet I want to be holding a proper rifle, and repeater, while holding that fire.
/end windbag session! Appreciate all the suggestions, nice to see what's out there.
