Hatsan carnivore .30 accuracy?

Went out today and shot all my pcp's and got to take my hatsan out for the first time. And I was curious. What size groups are yall getting out of your hatsan carnivore. 30? I shot at 20 40 and 60 yards. (It was pretty windy today) My best pellets were jsb 44gr. I tried the predator Polly mags and they didn't want to perform our of my gun and had a tough time getting them to work good in the magazine. Kept wanting to fall back out.
Here's a group at 40 yards. The top is jsb 44gr and bottom is the Pollymags

 
My Carnivore hates the Polymags and puts out tight groups with the JSB out to 100yds. That's with tuning to a decent curve to get the most shots. Although a QE, it still puts out a bark. That's why I hardly shoot it. Installing an LDC will require floating the barrel since the shroud has to be removed to screw on the LDC. Unless someone show a picture of something different. But overall the Carnivore 30 has been an accurate beast of a gun...with the JSB 44gr so far.