375 HH mag is hard to beat.Phorwath has a lot to say from first hand experience, and should be weighted heavily.
I do think with todays good bullets more can be done with less, but with todays good bullets more can be done with more as well.
I would take your set up, but it is right at my minimum in terms of choices. A new rifle is always part of the fun for me. Only outcome will tell, the not quite sure unknown is a reason we go. Break up the familiar, and go with a new rifle if for that reason alone.
I like the .338 RUM if that's a diameter you choose.
.375 and bears are almost part of the same sentence. Mixed bag says the others. It's a bear trip, get a pure bear rifle if you can.
You'll have fun either way.
At least some of the advice is coming from people with experience shooting big bears. Most of the advice is from arm chair experts. I have shot or seen shot grizzly with a 300, browns with 338 and 375 and polar bears with 358 Norma and 375. I tell you with absolute confidence that a 375 was far superior in safe and humane kill power. That 338 on an 11' 4" bear really made him angry. Once they are fired up they get super power ability to absorb bullets and keep going - or coming. That bear closed ground on us fast as the 338 emptied. Thankfully, the 375 anchored him. The only big bear rifle I carry is a 375. By buddy bought a 416! Long range isn't for dangerous game, and often reloads aren't allowed.Planning on a once in a lifetime brown bear Alaskan hunt in a couple years. Have a 300 Win Mag that shoots 220 Nosler partitions and 200 Nosler partitions quite well. Don't really want to buy another rifle but should I move up to a 338 class? Thinking of either a 33 Nosler, 338 WM or 338 ultra??? Opinions???
Had one of my 300 win mag rifles re-barreled to a 338 win mag, I had heard 375 calibers and larger are supposed to be better for Brown bear. With a muzzle brake you could pick any new caliber for the big bruin. I used a Bison and this hunt as a justification for the re-barrel of my 300 win mag rifle. Your 300 win mag rounds sound like they would do the job. However, I found that my 338 win mag kicked less (felt recoil to me, which surprised me) with the 265 grain and 300 grain bullets than my 300 win mag with 200 and 215 grain bullets shooting both without a brake, side by side one after another. Have a great time on your hunt.Planning on a once in a lifetime brown bear Alaskan hunt in a couple years. Have a 300 Win Mag that shoots 220 Nosler partitions and 200 Nosler partitions quite well. Don't really want to buy another rifle but should I move up to a 338 class? Thinking of either a 33 Nosler, 338 WM or 338 ultra??? Opinions???
Planning on a once in a lifetime brown bear Alaskan hunt in a couple years. Have a 300 Win Mag that shoots 220 Nosler partitions and 200 Nosler partitions quite well. Don't really want to buy another rifle but should I move up to a 338 class? Thinking of either a 33 Nosler, 338 WM or 338 ultra??? Opinions???
I do believe a regular .338 WM with 250-gr. Partitions will be plenty. IMR-4350Planning on a once in a lifetime brown bear Alaskan hunt in a couple years. Have a 300 Win Mag that shoots 220 Nosler partitions and 200 Nosler partitions quite well. Don't really want to buy another rifle but should I move up to a 338 class? Thinking of either a 33 Nosler, 338 WM or 338 ultra??? Opinions???
Wouldn't one of the very first questions asked by a reputable guide being considered be what gun you wanted to bring?Make sure whoever you choose as a guide service APPROVES your rifle for the hunt and in writing. Some guide services have minimum cartridges for brown bear and getting picked up at airport is not the time to find out.
338 WM. 210 partition or 215 Sierra game king. Even a 215 Barnes tip triple shock. Good velocities, great sectional density. a monster killerPlanning on a once in a lifetime brown bear Alaskan hunt in a couple years. Have a 300 Win Mag that shoots 220 Nosler partitions and 200 Nosler partitions quite well. Don't really want to buy another rifle but should I move up to a 338 class? Thinking of either a 33 Nosler, 338 WM or 338 ultra??? Opinions???
Your 300 is just fine providing it is ultra reliable and durable. It should fit you like a fine shotgun and don't hang a lot of crap
on it that will hang up in the alders.....ammo pouches etc. If it's got a floor plate, glue it shut or duct tape it. Your scope cover should be easy and water tight. Years back, we used pieces of inner tube stretched over the scope.....harder to find today. Now I go to a physical therapist friend and get a piece of .....I think it's called Theraband or some such....your bullet choice is good.
Good luck on your hunt.....Where will it take place?
If a guide put a bullet in my bear, or any other animal I paid to shoot, that guide better have a tag for that species. I don't need to hear about all the times a guide or a PH saved a client from an animal. I know it is their duty to save my life, but other than that, he best keep his rifle pointed somewhere other than at my animal. If the animal wins, then I should have been better or brought more gun. And if he does save my useless carcuss, it will be more to save his license and a big investigation. Just thinking out loud!Install a muzzle brake.
I even have one on a 22 Creedmoor. Very nice for spotting hits. Muzzle brakes on most everything else too. With an efficient muzzle brake, recoil is almost a non-event.
In the Bay we hunted brown bear earlier this month, the local guide and client had a 10+ footer scramble to within 5yds of them after shooting it.
They returned the next morning to find a good blood trail and the boar still alive. Were able to finish it with additional shots fired.
I don't have the fine details about shot placement, but feel certain the guide was plugging it too, since it came at them. And they commonly carry .375s.
The bigger the bear, the bigger the caliber of my rifle carried. At this point, I use .338s. I don't hunt with a guide. So don't have to worry about them shooting my bear. I just like them down sooner than later.