Some pictures from today's attempt with Lou at the trigger:

http://img441.imageshack.us/img441/5...grange1id5.jpg

http://img408.imageshack.us/img408/5...grange2vi4.jpg

http://img240.imageshack.us/img240/7...grange3zs2.jpg

This from Phil Bulmer:

UPDATE

The argument is now settled. I went to the shooting club today with Lou and he set up a card at the 50 yard point. It was patently obvious that nobody could shoot a card every time so I suggested he simply sat and shot until the card was hit. I observed through my rifle scope as Lou began shooting at the card. Typically he was shooting 2 to 3 shots per minute. I watched the card wobble a few times after it’s base was clipped. Within 10 minutes Lou had successfully struck the card and torn it across a 3rd of its length. The card can’t be cut all the way through; the pellet has less than 1ftlb at the target, which is insufficient to cleave it in two. However, it does prove conclusively that it is possible to aim at and hit a card with a pistol at this range and within a limited number of shots.

The test has also proved that a card can indeed be seen at this range. The card is visible on its own but placed against a backstop it can produce a shadow when illuminated by direct sunlight. The test was conducted under an overcast sky without shadow; Lou was sighting the card’s edge directly. The pistol was an unmodified (aside a replacement mainspring) HW45 delivering around 4ftlb at the muzzle. The pellets being used were AA Field in .22