DPMS mini sass

[r-22 pilot]

I have a mini sass with a 1-8 twist. I'm having issues finding load that will shoot consistent. I've tried 68g match and 75g A-max with both H322 and Varget. I also just loaded some 50g Varmint Grenades; I don't have much faith in them shooting very well, but I will see tomorrow.
If anyone has a load they have used with this twist and has had good results any help would be great!