Читать книгу The Gun Digest Book of Combat Handgunnery онлайн
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Have a small flashlight with you, and perhaps a white business card or 3x5 card. (The Bore-Lite made for the purpose is, of course, ideal.) With the action open, get the card down by the breech and shine the flashlight on it, then look down the barrel; this should give optimum illumination.
Testing for “push-off” with cocked Colt Official Police. Hammer stayed back, passing test.
…and the cylinder has locked up tight even before the hammer falls, showing that this Ruger Service-Six is perfectly timed, at least for this particular chamber.
If the bore is dirty, see about cleaning it then and there. The carbon could be masking rust or pitting. What you want to see is mirror brightness on the lands, and clean, even grooves in the rifling.
Watch for a dark shadow, particularly one that is doughnut shaped, encircling the entire bore. This tells you there has been a bulge in the barrel. Typical cause: someone fired a bad load that had insufficient powder, and the bullet lodged in the barrel, and the next shot blew it out. The bulge created by that dangerous over-pressure experience will almost certainly ruin the gun’s accuracy. Pass on it.