I love my 527 American.
As Mr. Conrad pointed out, it's a great walking around or truck rifle. Mine rides on the tractor with me quite a bit. The barrel is light, but still plenty of steel around that little bore. Shoots great!
My only complaint is the feeding. It feeds fine until it gets to the last round in the magazine, which it won't feed. It appears that that last cartridge is angled too high and the tip jams against the top of the barrel, above the chamber. I need to get it fixed or try one of the newer magazines, which I hear will fix the issue.
I'm still shooting factory 20gr VMax, I need to pull the trigger on some dies and the .172 setup for my Redding trimmer.