I picked up a used 8400 in .270 WSM off the forum last year and was immediately impressed with the workmanship. The wood to metal fit is excellent, (very similar in quality to my Shiloh Sharps) and the trigger is exceptionally clean (it's a hair over 3lbs but feels like it's barely 2lbs).
On the down-side, I have not been able to squeeze sub-MOA groups out of this rifle (five-shot groups average about an inch and a quarter to an inch and a half at 100 yards) but, in all fairness, I haven't spent very much time playing with it.
Once things warm up a bit I hope to try a bit of up-pressure at the tip of the forearm to see if that tightens up the groups. Currently it's free floated and, given the skinny barrel profile, the current set-up may not be ideal.
Other than that, the rifle handles like a dream and is everything a guy could ask for in a classic "walnut-and-steel" lightweight hunting rifle.