RE: barrel length
Actually if you think about it a shorter barrel would be stiffer and in theory would be more acurate. Many more varibles than barrel length that go into making a accurate gun. Now for off hand shooting a longer barrel may have an advantage but it is from the increased sight placement and heavier weight making it easier to hold steady. Barrel length and accuracy is just one of those old wives tails, increased accuracy was associated with the longer barrels because they are steadier to hold when shooting off hand, but the oldtimers didn't understand so thats why the long barrle mith came about.