The appeal of the 20ga rifled sxs is that we can use it here in our shotgun only areas while no rifle may be used - except muzzle loader. I would prefer a 12ga or 20ga Paradox or similar, like the WR Faunnetta, but the high cost for the limited (limited use: breach loader season runs only two weeks) and replacable use (replaceable use: meaning that I can purchase a much, much cheaper weapon for the same utility) keep me wishing and not buying. When the CSMC rifled 20ga sxs came along recently it filled the gap perfectly, legal, not too damned expensive, and a hell of a lot more fun and interesting than my rifled 12ga pump deer gun.

As for brown bear, I would list the 375H&H, 338wm, etc, etc, as better choices. In doubles, a QD scoped 375 FL or even H&H... Moose, even less rifle with more range. But I get your drift, the 577 BPE is a fine double rifle for the purpose if you're looking for the joy of using a double rifle, and less expensive than a 450NE or similar.

Personally, I'm not wedded to double rifles, I love them, but I also love a really good bolt rifle. Where I find them the best choice is where I love a double most, and that would include elephant hunting. Might include big bears too from what I have read (no personal experience), and I have a nice 375H&H double for that, awaiting the instalation of good QD mounts.

JPK