Glazed powder does not absorb moisture, or break up in transportation, so much as unglazed.
22. What is the established mode of proving the strength of powder in the U. S.?
A sample is taken from each barrel, and the strength determined by the eprouvette mortar.
23. What is the least range allowed?
The general mean-range of new powder must not be less than 250 yards; but no powder ranging below 225 yards is received.
24. When is powder in magazines considered unserviceable.
When it does not range over 180 yards.
25. What is the range of good powder?
Cannon from 280 to 300 yards. Small grained from 300 to 320 yards.
26. What other means is there for determining the strength of powder?