We are talking camp gun i beleive?
Went back and read where this started, and keeping that little gun in camp is fine. The reality of it is, a black bear is going to come to camp looking for your food, not you, last i checked black bear attacks on humans are extremely rare, they just arent that bold a critter.
Grizzlies coming to camp are a whole nother game though, grizzlies period really. I hunt th eBob Marshal wilderness here in MT alot, and only live 80 miles from Yellowstone park, this is griz country for sure. I know everyone laughs about the pepper spray, but it is quite effective, everybow hunter i know, myself included carries it.
While its not a 44mag on your belt, you do carry it with you all the time, the carbine will be leaning against a tree, beside the sleeping bag, whatever when in camp, I doubt shes packing it 100% of the time, but would always have the pepper spray on her.
Here is why its better than a gun for most people in the world, and definitely worth having as a backup.
Majorit of grizzly encounters happen fast, and I mean fast! You might get one shot if its frontal, if it hits you from behind, your already down. Once down, that pepper spray carried on a chest holster is still useful. If you can get your hand on your chest, you can litterally fog the area, doesnt have to be a direct hit. yeah, you suffer too, but i'll take my eyes burnt out of my head before a bear gettin chewed to death. Same goes with frontal attack, you get to aim in that case, but you are shooting a wide path of spray, putting up a barrier so to speak. Better odds IMO.
For a camp gun, that little 30 is probably sufficient, but isn't my choice for sure. My camp gun is a remington 870 with 20 inch slug barrel and full mag of slugs. If i have the chance to shoot it out point blank with a griz, hard to beat a slug.
I really wouldn't worry about the black bears, i got a better chance of hitting the lottery than having a bad deal with them. The griz are always the issue, just flat unpredictable. I have had them false charge at 50 yrads, but have never had to test any theories out fortunately.
Anyhow, my two cents living here in Bozeman Montana, I have alittel first hand experience, and you wont catch me in griz country without the pepper spray, its a viable plan, either as backup, or first choice depending on the situation.