Considered by many to be the ultimate of true English game ammunition. The history and the heritage of the Grand Prix and Impax are unrivalled. The standards of these cartridges are often copied but never equalled. The low recoil and smoothness of this ammunition have always made it the first choice of the traditional English gun owner world wide. Available in paper case 12 and 20 gauge, plastic case 12,16,20 and 28 gauge. Available in 30gram, 5 shot and 6 shot.