A Crosman 760 and 2260 were used in the test. The velocities given are 5-shot averages using the same gun and the same tins of pellets used in the test, taken several months after the gelatin test took place. So, the actual impact velocities were not recorded then, but these should give you a pretty good idea of what to expect. All shots fired at 6' distance from the face of the first piece of drywall. Some of the pellets below were fired into a fixture used in the FBI 'interior wall' test (two pieces of drywall mounted 3.5" apart to a sturdy frame), to evaluate the effects of firing a similar pellet gun for indoors pest control. All shots were fired at an approximate 90 degree obliquity with respect to the face of the wallboard (reflecting a situation of maximum penetrative potential for the pellet through the wall). The idea here, of course, is to find a pellet that will not go through an interior wall (in the case of a miss) and stitch someone on the other side. An attempt was made to evaluate the velocity of the pellets upon exit from the back of the wallboard, but as you might notice from the data below, the velocities of most common pellets that did penetrate both boards should be almost insignificant. A 'yes' or 'no' will indicate whether the pellet penetrated through both sides of the test fixture. In order to increase expansion on the HP pellets, a 'x' shaped cut was made into the face of the pellet using an X-acto knife. The cut went the length of the cavity, and stopped at the base of the cavity. The 'reversed' pellets were just that - I turned them around in the gun and fired them, giving hollowpoint-esque expansion. There are also two denim tests in there, to simulate a rodent with a thick hide. Gamo .177 Hunter (reversed) = 0.254”; Penetration = 1.54”. Velocity = 522 ft/sec. Gamo .177 Pointed (reversed) = 0.253”; Penetration = 1.50”. Velocity = 512 ft/sec. Gamo .177 Match (reversed) = 0.270”; Penetration = 1.50”. Velocity = 522 ft/sec. Beeman 0.22 Crow-Magnum (reversed, 1 layer of denim) = 0.320”; Penetration = 2.24” Gamo .177 Match = 0.178”; Penetration = 3.03”. Velocity = 526 ft/sec. NO. Gamo .177 Pointed = 0.174”; Penetration = 4.05”. Velocity = 521 ft/sec. NO. Steel .177 BB = 0.171”; Penetration = 2.95”. Velocity = 532 ft/sec. NO. Lead .177 BB = 0.176”; Penetration = 3.90”. Velocity = 486 ft/sec. YES. Beeman 0.22 Crow-Magnum (reversed) = 0.318”; Penetration = 2.68”. YES. Beeman 0.22 Silver Bear (reversed) = 0.360”; Penetration = 1.54”. YES. Beeman 0.22 Silver Bear = 0.221”; Penetration = 3.78”. YES. Beeman Silver Jet 0.22 = 0.216”; Penetration = 5.08”. YES. Beeman 0.22 Crow-Magnum = 0.221”; Penetration = 4.21”. YES. Beeman 0.22 (X-cut) Crow-Magnum = 0.240”; Penetration = 3.70” Beeman 0.22 (4-layer denim) Crow-Magnum = 0.231”; Failure to penetrate final layer. NB: The Gamo .177 Hunter WILL penetrate both sides of an interior wall, when oriented point-forward. The .22 Crosman Flat Point pellet WILL penetrate both sides of the wall. Watch out for .22s, I could not find a pellet or range less than 25 yards that would not penetrate the wall.