6 mm ppc and barrel lenght

[brian923]

does the barrel lenght of the 6 mm ppc effect the accuracy of the round, and does is shorten its range? wanting a 16" if possible for an ar-15 build. but dont want to if the ballistics suffer.

 

[jerrysharrett]

According to QuickLoad a 68 Berger loaded with 30g Vv133 and a 22.5" barrel, normal 100/200 length, will yield about 3320 fps, cutting the barrel to 16" will yield 3095 fps. I know that at 21" cutting off 1" of barrel will cost about 35 fps.

Effect on accuracy, just have to try it and see. My best guess is that at 100 yards accuracy might improve slightly due to the difference in barrel stiffness. At longer ranges the wind will effect the slower load a bunch more than the faster load.