[4runnerman]

No, it is not. Longer barrels reduce accuracy *slightly

Not according to the Swat team that tested a 308 all the way down to a 18 inch barrel. Shorter barrel gain no more accuracy. The only benifit was easier manuverability. From a 22 to a 26 inch barrel there was a 32 fps gain in bullet speed. While they said there is no benifet of a longer barrel unless you want to propell a heavier bullet faster with a slow burning powder. Test by them indicated that a 22 inch barrel showed 100 % powder burn, But no gain in accuracy was seen an no lost in accuracy was seen by going to a 26 inch barrel