Does the JSB .22 Cal 25.39 grain work in FX mags, specifically the mags for the Royale 400?
PCPReaper"PCPReaper"Hey Nutcracker also try the H&N Baracuda Match 21.30 Grain Or the Barracuda Extreme my 400 loves them. They're a heavier pellet for longer distances & good expansion on the extreme.