FX superior Heavy or superior?

will I can say my Maverick 30 cal 600 MM standard superior 1:22 twist rate will shoot 47.2 NSA slugs into 13 shot group at 50 yds you can cover with a dime. 

Hit a small bird in the head at 133 yds yesterday... I was aiming at the body... hit the head... did not have a good perch to shoot from 

1st reg 170 2nd reg 150 PW 7 velocity approx 970
 
As I know FX has updated the .30 superior liner twist rate several times. The standard superior liner was 1:37 when first time on market last year, which FX call it slow twist now. Then FX upgraded it to 1:26 liner by the end of last year. Now the latest standard superior liner is 1:22,which was called superior heavy slugs liner before. The heavy liner is 1:18 right now. 

I think 1:22 can handle the FX hybrid slugs and other light/middle weight slugs.