Silvanus,
Several years ago I embarked on a shooting program with S&W M29 and M629 .44 Mag revolvers using 210 gr cast bullets loaded to 1100 fps: 50 shots standing, two hands, no rest, 25 yds, 25 yd pistol target, perfect score 500. For two years I fired this course weekly and recorded/analyzed scores. My results were:
- 4" barrel, open sights: avg score 490
- 6-6.5" barrel, open sights: avg score 492
- 6.5" barrel, 2X scope: avg score 494
- 8 3/8" barrel, 2X scope: avg score 490.
For me, the 6-6.5" barrel gun was slightly more accurate than the 4" barrel but the 4" gun is more handy. YMMV.
Result: I hunt with scoped 6.5" M629 and shoot targets with 5" M629 open sights. (My 4" M629 was stolen.)
Good shooting and be safe.
LB