Neither the box nor the website of the brand identify the arm used for testing, nor even the barrel length. One doesn't have an idea of what to expect. I shoot .22 LR pistol also. I know my four inch Ruger autopistol will not develop the same velocity (with the same ammo) as a twenty inch rifle. (That would be a pretty sad rifle, but that's not the ammunition's fault.) I really have no reason to doubt the quality. The ammo shoots well out to fifty meters or so. Actually shoots about three to four inches at 100 yards, but I don't plan on attempting that much. I have no reason to doubt the velocity claimed in whatever rifle or testing device used. Or rather, the average of several shots, rounded off to the nearest five fps. My gripe is I have nothing on which to base an expectation. Further casual investigation shows most all ammunition has a velocity shown, but no mention of the length of barrel. Nor am I expecting ammunition suppliers to test every conceivable arm so chambered and print that on the carton. But the addition of something like "... in a 24" barrel" would shed a ray of light for the user. Or am I just too nit picky?