Originally Posted by
JeffWard
Elaborating on the above:
A longer barrel does not mean improved accuracy. A longer barrel means a longer sight radius, which means less over-correction of sight picture, and tighter "operator margin".
The most accurate rifles have extremely STIFF barrels, but not long. 21", 22", 23" barrels are common. Target pistols are similar. 5" bull-barrels outshoot 7", 10" barrels quite frequently.
Longer barrels give the powder more time to burn and expand within the confines of the barrel, producing higher velocity. Higher velocity produces less bullet drop (flatter shooting) at longer ranges. But even WAY past target shooting distances, a pistol bullet effectively shoots dead flat. The drop is hardly measurable.
All pistols will hit at different places (vertically) at different yardages, but this is due to sight "offset" with the bore-line. The taller the front sight (or scope), the greater the deviation.
Therefore the design of target pistols: with longer sight radiuses, and target sights recessed into the top of the slide (lowered). The barrel length is the least critical factor for mechanical accuracy.
JW