Air Boss Pellets and FX Crown

I've been playing with an FX Crown MK2, trying to find it's sweet spot in each caliber. .177 was first, with a 500mm barrel. Currently I'm at 112 bar on the reg, #7 on the hammer and 177/22 on xfer port. My first step is chronographing with my new Garmin, (what a sweet tool). Benjamin 10.5gr black box do fairly well, ES of 15 fps with an 835ish fps. Not bad.

The real surprise to me was, I had some 9gr Air Boss pellets that shoot fair in most guns, but nothing spectacular. I've had them forever and just keep them stacked in my stash. So, I thought what the heck, let's try 'em.
Same settings as above, and ES of 8 fps and 869 fps avg. Looks good, but how do they shoot? Well, that's the even more amazing part. Evidently, this liner likes these very well. I got single hole groups at 30 meters with calm wind. Even when the wind kicked up pretty heavy and I doped my shots, I could get ragged holes of no more than 3/8". I misjudged a few, but I had several groups that I got right and they were one ragged hole.

I've never had a gun that shot these really well, so I'm wondering if they shoot well for anyone else, because I've almost never heard an opinions on them.

I got them from Midway and they just threw the tins in a box and shipped it, so I imagined a lot of pellet damage, but they have a foam pad in them and they seemed to arrive fine. Fine enough to shoot very well.