Mininum Grizzly cal ???
Hence the word Min.....Thats like building a house on min code requirements, you may save money but it may come back to haunt you if
something fails......
Common you have to show this animal some respect for what this animal is and can do.....
Just measure 12ftfloor to cieling up along a walland 6 to 8ft wide across..Thenstep back and look....
This will give you some idea......
Next watch the discovery channel...There was a great bear program viewing on that channel......
Yeah to .270win with 130gr. contrlled expansion bullets have done the trick in a pinch.But I don't think that peoplle truly go looking for Grizzlies
using this cal.....If they do I haveABSOLUTLY NO SYMPATHY FOR THEM IF THEY GET INJURED....
When I'm in Grizzly country I use 30-06 with 180 TBBC for defence purpose only......
I'm confident enough these will do as long as there is enough distance between me and the bear...
But this certainly wouldn't be any true bear hunters of choice cal......
I'd leave the .277 cal and .284 cal at home......
To hunt this animal with confidence,I'd start with .30 cal magnums in 180 -200gr.controlled expansion bullets and go up from there,.311 Imperial mag,8mm Rem Mag .338 Win Mag etc .338 Lapua 45-70 etc......
If you can handle the recoil, 375 H&H......
I'll even through in the .50 cal BMG......