Anyone have differnt results With Patriot Javlin 30cal slugs?

So I have a Impact M3. And it will shoot Zan slugs with absolute STELLAR RESULTS. FX Hybrids also work Fantasctic only with 3rd choice nsa 49.5g.
So I figured I'd try some new hyped ammo and these javlins are absolutely Terrible. At a 30 yard sight in these thing are the so inconsistent . I've been Tuning for the last 3 days. about 600 rounds of 52g .301, 56g .301, 64g .301. I have not tried the .300 yet as everyone says use .301. So far in my opinion these are trash.
So I have tried shooting over 1000fps to low 800s. I found the tightest were around 990. and I am running heavy slug liner.
Anyone have good results with these? In a 30cal M3? Please share your results and tune please. I had high hopes for these as the .22 40g are fantastic but 30 cal not the same luck