I did some batch testing with the NSRA pistol and rifle squads a few years ago the results were interesting and generally the R10 matched or most often bettered the performance of the shooters own selected pellets or batch tested pellets of other manufacturers.

Do better grouping pellets really matter? For pistol the difference between a good batch and an average batch is noticeable but with integer scoring and also the inherent movement of a shooters aim point it's debatable whether it makes a huge difference to your score.

To counter the above argument though 10m is very much in your head, any doubts and it's a very unforgiving sport, so if you can see an improvement by using xyz pellet then I would say use it as then it gives you one less thing to worry about.

Matt