The standard test I run on all new Hybrid bullets is to load them to jump: 0.015", 0.030", 0.045", and 0.060". Typically they all shoot about the same groups, and the 300 grain Hybrids were not an exception in my rifles: a TRG-42 in 338 LM, and a 338 Edge. The bullets grouped around .5-.7 MOA...