Quote:
Originally Posted by __steve__
I assume the cylinder may expand due to pressure, but my 500 shows marks on each of the 5 bores, and one underneath top of frame. The clearance seems normal and everything looks fine. But the two surfaces (top of cylinder and adjacent frame hood) are flexing under pressure enough to scuff. Is this a normal occurrence? (refer to 1st and 3rd pictures)
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What you see is the reflected powder residue from the top of the back strap. Look at the first photo and you can see the pattern on the backstrap that is be reflected onto the cylinder. Nothing to worry about. They wipe off with a little elbow grease and a lead away cloth if they are bothering you.
Quote:
Originally Posted by __steve__
2nd additional question: Do the 2 assembly #’s (yoke and frame) always match? (refer to 2nd picture)
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No - and today they rarely match. They are of no real value outside the manufacturing of the gun and no records of them are kept. For all practical purposes they are useless.