Assertion: gunpowder's grain | /r/HasProperty | 0.58 g
Facets:
Source sentences:
text: When using the minimum loads, 9.0 grains (0.58 g) of AA #2 yield a velocity of 1126 ft/s (343 m/s), and 19.5 grains (1.26 g) of #9 yield 1364 ft/s (416 m/s).