Sec. Density .242
FIV Functional impact speed 1600-3300Fps 487-1006M/s
PIV Preferred impact speed 1700-3200Fps 518-975m/s
The 277-130 was designed for what is considered the classic uses of the caliber, deer, sheep, mountain goat, caribou, etc. It is designed for all the current cartridges using this diameter.
Sec. Density .280
FIV Functional impact speed 1700-3200Fps 518-975m/s
PIV Preferred impact speed 1800-3100Fps 548-945m/s