Ah thank you Eric. The Brocok Concept I got seems to be quite jumpy with the crosman pellets (for obvious reasons) and had 10 out of the 150 shots go over the 150 mark. 489.7, 501.3, 493.

Shots 91-100 had the highest number of over shots.
498
500.1
498.1
498.7
501.1
498.7
501
502.7
490.5
500.3

I will post the complete strings later.