Hi all. I've been lurking here for years but have never posted before. I know lots of guys are always asking about how effective the 444 is for grizzly bears. I live in the Yukon where I have made my living running a fishing lodge & guiding hunters for almost 30-years now. The good old Marlin 444 is as good as anything for big bears. My son killed this bear as he was trying to get into a cabin. He was incredibly aggressive and squared over 8-feet. He was shooting a Hornady 265 grain bullet I had handloaded for him.