Re: Barrel Life
Bore capacity in grains is a observed 'grains loaded' capacity where you would get excellent barrel life for a given caliber. For instance, 47.4gr loaded and burned in a .308 bore should offer a potential of ~3500 max accurate life. The standard for this is the 6PPC. It is a preset value, and does not go into firing rate, use of moly, chrome linnings, pressure, powder type, amount pushed down the barrel-vs-burnt in the case, neck length/shoulder angle/flame point, etc. Things that are less than tangeble. That would be a helluva program!
Also, don't confuse this with "bore-overbore", or in expansion factor calcs. Thats completely different.
I doubt that the Barnes coating amounts to anything other than friction/fouling reduction. Needed due to being a solid. Moly on the otherhand, actually flashes, drawing heat from the process, and potentially improving barrel life. This will probably be introduced in upcoming reloading powders. But I won't use it unless they can keep it from coating to my bore.
[ 02-26-2004: Message edited by: Mikecr ]