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Posted: 7/30/2022 2:15:54 PM EST
I'm not going bear hunting, I'm just messing around.

But here is parameter of my question.

Start with the calibers that are perfectly fine for brown bears.
But available in a semi-auto rifle.
And of the available semi-auto calibers which one could also be pressed into service for longer shots on lighter game. Same caliber, longer range bullet, as accurate as possible.
If there is a 375 H&H in semi auto then that is probably the one, but I strongly doubt there is one available.
And the rifle should be reasonably reliable for obvious reasons.

I don't even know if such a rifle is available.

Extra points for detachable box magazine.
Link Posted: 7/30/2022 2:17:46 PM EST
[#1]
.338 win mag or .45-70
Link Posted: 7/30/2022 2:19:15 PM EST
[#2]
Who has the IP for the old Cobb magnum length actions?
Link Posted: 7/30/2022 2:19:30 PM EST
[#3]
458 SOCOM

Something in 30-06

12 Ga shotgun with Berneke slugs.
Link Posted: 7/30/2022 2:20:19 PM EST
[#4]
Link Posted: 7/30/2022 2:21:43 PM EST
[#5]
Browning BAR in .338 WM.
Link Posted: 7/30/2022 2:21:55 PM EST
[#6]
Browning BAR in 300 or 338

the 300 is a sweet shooter.
Link Posted: 7/30/2022 2:23:17 PM EST
[#7]
12 gauge with slugs Alaska Sate Troopers style.
Link Posted: 7/30/2022 2:23:22 PM EST
[#8]
AR in 338 Federal or 358 Win .
Link Posted: 7/30/2022 2:23:36 PM EST
[#9]
Link Posted: 7/30/2022 2:24:51 PM EST
[#10]
A .308 AR10 will do the job if you insist on a semi auto...

Personally I'd recommend an elephant gun...one shot, one kill.
Link Posted: 7/30/2022 2:25:44 PM EST
[#11]
Get one of those Garands converted to 458 win mag?
Link Posted: 7/30/2022 2:26:27 PM EST
[#12]
Nemo Omen 458 Winchester mag:

https://youtu.be/QcnoFE7Dc68

I bet if one were really serious, Falkor could throw together a 375 for you.

The Bighorn 500 automax would be easier to lay hands on and it's plenty of gun too.
Link Posted: 7/30/2022 2:28:53 PM EST
[#13]
An Official Red Ryder carbine action 200 shot range model air rifle
Link Posted: 7/30/2022 2:29:52 PM EST
[#14]
12 ga with slugs
Link Posted: 7/30/2022 2:30:31 PM EST
[#15]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
An Official Red Ryder carbine action 200 shot range model air rifle
View Quote



Why would you want to just shoot the bear's eye out?
Link Posted: 7/30/2022 2:30:57 PM EST
[#17]
I’d rather be able to put a lot of decent rounds on target quickly if your talking about self defense from bears and not hunting.

Give me some decently hot .308 in a 20rd mag from a 16” AR10 with a decent quick acquisition optic.
Link Posted: 7/30/2022 2:31:17 PM EST
[#18]
10mm

1st to say it.
Link Posted: 7/30/2022 2:33:09 PM EST
[#19]
Garand in 9.3x62, maybe. .338-06 or .35 Whelen, or something like at, with appropriate RN solids, could work, too, although I've only seen the first one.
Link Posted: 7/30/2022 2:33:47 PM EST
[#20]
Link Posted: 7/30/2022 2:34:07 PM EST
[#21]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
458 SOCOM

Something in 30-06

12 Ga shotgun with Berneke slugs.
View Quote

This
Link Posted: 7/30/2022 2:34:13 PM EST
[#22]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
A .308 AR10 will do the job if you insist on a semi auto...

Personally I'd recommend an elephant gun...one shot, one kill.
View Quote


I've got a .416 rem mag that was put together for a brown bear guide in alaska. But it is a bolt gun. I am very highly confident the fast .400 grain bullets would smash up stuff. But, it's a bolt gun. Loaded down it is my go-to gun. But it will definitely fix problems with elephant bullets.

You really think a .308 is perfectly adequate for brown bear? I have no idea. I just like to err on the side of caution. It's why I bought the .416 rem.
Link Posted: 7/30/2022 2:34:56 PM EST
[#23]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I’d rather be able to put a lot of decent rounds on target quickly if your talking about self defense from bears and not hunting.

Give me some decently hot .308 in a 20rd mag from a 16” AR10 with a decent quick acquisition optic.
View Quote


I think people overestimate how many accurate rounds they can get off in a charge. A double rifle might even be sufficient.
Link Posted: 7/30/2022 2:36:42 PM EST
[#24]
12 gauge slugs, gets the job done.
Or you could hire this guy....
Link Posted: 7/30/2022 2:36:47 PM EST
[#25]
An M107A1 chambered in Barrett 416 could kill anything in North America you could lay eyes on. But that’s a heavy rifle.

Depending on your definition of longer shots on lighter game, a realistic candidate would be an AR10 in 45 Raptor or one of the 338Lapua AR-variants.
Link Posted: 7/30/2022 2:37:21 PM EST
[#26]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I’d rather be able to put a lot of decent rounds on target quickly if your talking about self defense from bears and not hunting.

Give me some decently hot .308 in a 20rd mag from a 16” AR10 with a decent quick acquisition optic.
View Quote


If a .308 is a reliable bear stopper then that has to be the gun. It will reach out just fine for stuff like elk and deer. And it can change jobs with a mere magazine change.
Link Posted: 7/30/2022 2:40:03 PM EST
[#27]
Link Posted: 7/30/2022 2:41:04 PM EST
[#28]
Discussion ForumsJump to Quoted PostQuote History


That really is a good looking gun. All things considered I'll bet it is easy to carry around compared to others.
Link Posted: 7/30/2022 2:45:49 PM EST
[#29]
For bear defense, unless the bear is attacking someone else, anything over 100yds and you're going to have some explaining to do. 50yds to 100yds depend on who's writing the report.
Link Posted: 7/30/2022 2:47:16 PM EST
[#30]
Quoted:
AR in 338 Federal or 358 Win .
View Quote

POF Rogue in .358 would be a handy package, I don't know if they can be re-barreled though. Someone here said their Alaska city pd has .450BM ARs in their cars. I don't think there's a lot of hardcast ammo in that round but maybe that doesn't matter. I saw a video a while back young hunter DRTing a grizzly with a hollow point .50B.
Link Posted: 7/30/2022 2:48:57 PM EST
[#31]
Discussion ForumsJump to Quoted PostQuote History


I was going to post this. remember reading the magazine article back in the day. Can't recall what magazine.
Link Posted: 7/30/2022 2:55:21 PM EST
[#32]
Noreen 16" Carbine X semi-auto .300 win mag (7lbs)

Link
Link Posted: 7/30/2022 3:00:11 PM EST
[#33]
Likely a Barrett 338lm, most reliable S/A rifle you will find..RND did build some 300 rum semi autos, they were supposed to be bad ass, but they have shut down as far as I can tell..


this is an RND 300Rum....

Attachment Attached File


Most likely you would be better off building a nice bolt action rifle and practice on it..

My hunting rifle,  Tenacity action, MPA chassis,  bartlein barrel chambered in 300rum..

Attachment Attached File

Link Posted: 7/30/2022 3:01:30 PM EST
[#34]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


I think people overestimate how many accurate rounds they can get off in a charge. A double rifle might even be sufficient.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
I’d rather be able to put a lot of decent rounds on target quickly if your talking about self defense from bears and not hunting.

Give me some decently hot .308 in a 20rd mag from a 16” AR10 with a decent quick acquisition optic.


I think people overestimate how many accurate rounds they can get off in a charge. A double rifle might even be sufficient.


2 misses/non-vitals and you’re done.

Most people aren’t used to shooting under stress either.
Link Posted: 7/30/2022 3:03:31 PM EST
[#35]
For me it would be a .308 on the low end. Good thing its a semi so at least you'll have a few followups if you need them.

The bigger the better if you're talking about a one shot stop.
Link Posted: 7/30/2022 3:06:51 PM EST
[#36]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


That really is a good looking gun. All things considered I'll bet it is easy to carry around compared to others.
View Quote

Yep very nice, but remember, any S/A rifle is going to outweigh a bolt gun by a good bit...Any semi auto may end up being a pig to pack hunting...
Link Posted: 7/30/2022 3:06:54 PM EST
[#37]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
AR in 338 Federal or 358 Win .
View Quote


This...
Link Posted: 7/30/2022 3:10:27 PM EST
[#38]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
For me it would be a .308 on the low end. Good thing its a semi so at least you'll have a few followups if you need them.

The bigger the better if you're talking about a one shot stop.
View Quote

I would want bigger than 308 against a big brownie...especially in a spitting distance alder patch..A good friend who spent most of his adult life guiding kodiak brown bear hunts on Kodiak Island has tried a pile of cartridges for a one shot point blank stop a big bear in its tracks..his choice......505 Gibbs...
Link Posted: 7/30/2022 3:10:36 PM EST
[#39]
A .308 should do just fine.  It’s a Bear, not a Cape Buffalo. A single.308 should have no problem killing one, and a mag dump of 5+ rounds should drop any bear on Earth.  It’s not the best, but I would figure adequate.

I would be curious what a 5.56 would do.  A string of fire, I would assume, would kill a bear just fine as well.

Personally, my Beretta 1301 with slugs would be my choice in bear country.  Light weight, fast, easy to put a lot of slugs down range.
Link Posted: 7/30/2022 3:12:26 PM EST
[#40]
Defensive use, meaning something easy to manipulate but still packs enough punch to put down a big brown, .458 SOCOM/.450BM/.350 Legend/12GA.  Any of those with a decent projectile would put serious hurt on any bear while being lightweight and easy to get on target quickly.

A .308-size AR would work well too, if set up correctly.  .308/.375 Raptor/.338 Federal/etc. would do just fine.

The guys posting semi auto .300/.338 Magnums and such... sure, for hunting while stationary.  I'd much rather pack my lightweight .458 SOCOM.
Link Posted: 7/30/2022 3:13:55 PM EST
[#41]
Any .308 loaded with a sturdy bullet will kill a brown or polar bear. I’d do 180 grain Barnes. Plenty of penetration, good expansion.

.30-06 is better. 300 Win also. But .308 would get the job done.
Link Posted: 7/30/2022 3:14:24 PM EST
[#42]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Noreen 16" Carbine X semi-auto .300 win mag (7lbs)

Link
View Quote

$3k BIN seems quite reasonable.
Link Posted: 7/30/2022 3:17:59 PM EST
[#43]
It is even a takedown:  https://drdtactical.com/kivaari/

Link Posted: 7/30/2022 3:18:00 PM EST
[#44]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

$3k BIN seems quite reasonable.
View Quote



Even better deal on a used one (NY compliant)

https://www.gunbroker.com/item/941034212
Link Posted: 7/30/2022 3:19:00 PM EST
[#45]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Get one of those Garands converted to 458 win mag?
View Quote


Came here to post this.
Link Posted: 7/30/2022 3:19:13 PM EST
[#46]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

I would want bigger than 308 against a big brownie...especially in a spitting distance alder patch..A good friend who spent most of his adult life guiding kodiak brown bear hunts on Kodiak Island has tried a pile of cartridges for a one shot point blank stop a big bear in its tracks..his choice......505 Gibbs...
View Quote

Phil?
Link Posted: 7/30/2022 3:23:25 PM EST
[#47]
Semi 308 can be had much cheaper than any 45-70 these days. Until ruger ramps up production, lever guns are going to be priced at ridiculously inflated levels.
Link Posted: 7/30/2022 3:26:41 PM EST
[#48]
I have changed my answer with a mythic gun from my youth...
The Ithaca Roadblocker in 10 gauge Magnum

HUGE 10 gauge Sawed off Shotgun ROADBLOCKER Ithaca
Link Posted: 7/30/2022 3:28:01 PM EST
[#49]
For the brownies around me I carry a ar-15.
Other wise it is ak or 45/70.

Kodiak and the big kenai brownies 338wm-45-70.
Link Posted: 7/30/2022 3:28:25 PM EST
[#50]
Barrett 50BMG obviously, haha

But yeah at minimum a 308 like an AR-10. I mean 25rd mags and just unload on the beast!!

Maybe a Garand 30-06 or BAR 30-06
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