I use Lubro-Technic LT1 now as of a week or so.
I used it a few years ago, then gave up on it because I didn't think it made any difference.
I have now changed my mind, with empirical evidence staring me in the face.
It's the only way I can get my Steyr to group now, short of a new barrel I suspect.
30 yards without LT1, a 30mm group ~ same pellets with LT1 @ 30 yards an 8mm group.