USN Gunnery and Fire Control

A collection of US Navy range table explanations, powder characteristics, and fire control information. For the main index of guns, range tables, and ammunition design see USN Guns, Range Tables, Ammunition Design and Testing.

Range Table Fundamentals

• The Standards — Standard conditions for range tables; the first eight columns
• The Non-Standards — Non-standard correction columns 10–19
• USN Range Tables — How range tables are prepared and computed
• USN Powder — Powder lot numbering, mixing, and initial velocity standards

Range Table Column Explanations

• Range Table Column 10 — Change of range for variation of +10 fps initial velocity
• Range Table Column 11 — Change of range for variation of −1 lb in weight of projectile
• Range Table Column 12 — Change of range for variation in density of air of −10 percent
• Range Table Columns 13 and 16 — Wind components: range wind and cross wind
• Range Table Columns 14 and 17 — Motion of gun in plane of fire and lateral deviation
• Range Table Columns 15 and 18 — Motion of target in plane of fire and lateral deviation
• Range Table Column 19 — Danger space and hitting space

Powder Index

• Powder Index