he was hunting moose... and 300 win mag is sufficient...but if I was in Grizz country I would want to carry at least a .338 win mag....and if I wasn’t expecting long range shots I would shoulder a Marlin model 95 Guide gun in either of the two .45s....the .450 marlin you can buy the hard hitting store bought ammo. the .45-70 you have to reload to get the most from your Marlin. I bought my youngest son one in 45-70 and for the deer and black bear in my area a slightly hot reload using only a .300 grain bullet is sufficient and the three deer he shot fell right down...did not ruin too much meat....
if I were using it for protection in Grizz country I would load up a 500 grainer....
I’ve got a Marlin in .45-70.
Unless something has changed since I bought mine, don’t know if you can go 500 grain in the Marlin, too long.
I mean, isn't there a danger that when your particular B&C Grizzly charges, you'll be busy at your portable reloading bench? Perhaps you should consider taking me along. With my trusty (slighty rusty) Iver Johnson loaded with a 12-gauge slug (Ted Williams Ammo, Sears, 1954) I could watch your back. Unfortunately, I do not pose for photographs with it, as the friction tape on the stock is somewhat embarrassing. For the right kind of money, I would consider that Camo Duck Tape, though.