My R10 was useless with any of the JSB/AA pellets but pellet on pellet at 35yards with H&N FTT and H&N Baracuda Match. Although the Baracuda Match are now in tins of 400 instead of 500 so use the Bisley Mags instead. They are equally as accurate. All of the above were best in the 4.52 in my barrel.

Mick