I spoke to the Lapua reps at Camp Perry a number of years ago regarding their Pistol Match and Pistol Match Special products. This is the info they gave me. The "Special" was introduced because the velocity did not produce enough force to cycle the bolt on the Walther GPS pistol. So they bumped the fps a bit and settled on about a 25fps increase (in a pistol barrel). Also, they use to advertise velocities on their .22 ammo boxes, but they have stopped this practice. Due to the fact that the velocities on the boxes were from 24" - 26" test barrels (not pistol barrels). In my case the SK Pistol Match had a listed velocity of 1033fps, though in actuality out of a pistol barrel it rated about 950fps. For my Hammerli's (208s') the Pistol Match lot I settled on produces 1/2" 10 shot 50 yard groups (still have a case and a half left of that for the long line). IMO, with any .22 ammo as stated in an earlier post, you always need to test lots in order to find what works best in you guns. I have tested newer lots of Pistol Match that do not average under 1".