G1 g2 g3 g4 ...g7 ????

[soundwaves]

ok sry about these questions but what are these ?? a 7mm rem mag 175 GRAİN SP bullet is it a g1 g2 ..g7 ?? whitch one ??

 

[Broz]

The bullet has both a G1 and a G7 BC Rating. You can use either one in your ballistic app. The G7 forms have proven to be better with VLD style bullets at distances past 1000 yards.

Jeff

 

[Canadian Bushman]

Im not sure of the intricacies, but G(x) is a b.c. standard, that helps define the shape of your bullet for the mathamatical equation used to determine its trajectory. G1 is the oldest most used and i might be mistaken but developed around a musket ball. G7 is the newest and the most suited for modern bullets, as broz stated.