I just picked up one of these in the post changes sku, with the barrel threaded into the receiver. From the endless web-r-net reading the best I can piece together is the rifle initially had a pinned in lightweight barrel, and a lot of the accuracy issues had to do with how the barrel mated to the receiver. Also, the new sku BMAGS have heavy stainless barrels.
It's still in it's 10 day "cooling off period" (thanks California) but i'll let you guys know how it shoots when I get it out of waiting period. I have Savage 10 FP's, a 10 FCM, and a 93 fVSS in .22 mag and they're all exceptional rifles. I'm hoping Savage made it right with the redesign, but I fear the caliber may have tanked already.
When your (the shooter) only option is a questionable but cheap bmag, a $1300 Winchester 1885, or an $800 ruger 77 you're not gonna get a lot of traction in the market. Unfortunately the handi-rifles went tits up as well, as it seems like that platform would have been perfect for an affordable outlet for this cartridge.
ETA: I know the ammo isnt everywhere, but I did pick up 5 boxes of Hornady 20 grain varmint rounds for $11 each (50 count). didnt seem too bad and I live in the sticks. Going to the city on vacation next week, will hopefully track down some 25 grain.