Originally Posted by Bernie
Blimey Brian, you've lost me on this one, surely this way it would mean putting the gun Iin some sort of clamp to get a correct measurement. How does the tinfoil method work.
Basically you just put a card right on the end of the barrel and measure the distance between what you were aiming at on the card and the hole the pellet makes in the card.
The difficulty with that is that your scope won't be able to focus down that low (the end of your barrel), so to increase the depth of field of your scope so you can actually see a cross on a card that's right on the end of your barrel you need to rubber band a bit of tin foil over the end of your scope and punch a small hole in the centre.. you should then be able to focus on the card.