Hi, Andy!<br><br>My Sheridan 5mm is the old style (have to hold down a safety on the back of the receiver with thumb or it will not shoot - like the grip safety on a M1911). One of the questions I asked them way back when I had it overhauled was "How many pumps is max?" and the answer was "8" - I had been pumping it 10 times up until then. Indoors, I normally pump it 5 times. At 8 pumps it zips a pellet clean thru 3/4" plywood at 10 meters - and it's still cooking along... that particular air rifle is especially rough on traps.<br><br>My RWS .177 disintegrates pellets in traps. Less mass; more velocity. It has very good penetration, especially with heavy pellets, but it's not in the same class as the Sheridan