Just wanted to post a quick update in case any one else out there is interested. I did find one locally for sale and picked it up for a decent price. It is a real soft shooter even with the heavies 180 class projectiles. So far no jams shooting 130-180 class projectiles out of 150 or so rounds. It has a very similar feel to a shotgun, the way it shoulders and the feel and break of the trigger. Ejects brass at about 4 o'clock and 4 feet away. The only issue I've noticed so far is with the bolt closed, it is extremely difficult to get the magazine seated properly with 10 rounds in the mag; even with 9 rounds, you really have to push it to get it to lock in. With the bolt locked open, the magazine slides right in and locks, no problem.
With little load workup it is shooting about 1" at 100 yards and 1.5" at 200 yards slinging the 130 ttsx at just a tad under 2900 fps. Pretty good for what I want it to do. Here are some data for you number guys.
18" barrel
Barnes 130 TTSX
Winchester brass
CCI 200
2.800" COL
Varget
3 shot group average, off bench, front & rear bag
45.0 gr 2700 fps 0.8"
46.0 gr 2792 fps 1.3"
47.0 gr 2835 fps 1.3"
48.0 gr 2878 fps 0.9"
49.0 gr 2902 fps 1.4"
As always, start low and work up.