Steve Jackson Games Forums - View Single Post - GUN Need to stat out a Weatherby .270 Winchester

clu2415 · 12-07-2017, 07:42 PM

A longer barrel is not necessarily machined more precisely than a shorter one. The most likely influence on ACC would be from bullet velocity, due to a faster bullet making it easier to hit a moving target. But not every loading has slow-burning powder that will take advantage of a longer barrel. Military 5.56 ammunition has a powder burn speed that is very closely matched to the M16’s 20 inch barrel, so it gains minimal velocity from a longer barrel.

You could also argue for an increase in ACC due to sight radius, but if you mount a scope, the sight radius is irrelevant.

12-07-2017, 07:42 PM	#16
clu2415 Join Date: Jun 2016	Re: GUN Need to stat out a Weatherby .270 Winchester A longer barrel is not necessarily machined more precisely than a shorter one. The most likely influence on ACC would be from bullet velocity, due to a faster bullet making it easier to hit a moving target. But not every loading has slow-burning powder that will take advantage of a longer barrel. Military 5.56 ammunition has a powder burn speed that is very closely matched to the M16’s 20 inch barrel, so it gains minimal velocity from a longer barrel. You could also argue for an increase in ACC due to sight radius, but if you mount a scope, the sight radius is irrelevant.