H380 was an early surplus type named for the fact that Bruce
Hodgdon found 38 grains to be extremely well suited to the 22-250 with 55
grain bullets; using the early lots of GI powder. This powder is the only
currently available spherical type that has a true ball configuration. It
meters most uniformly as compared to all other canister grade propellants
because of its shape. It is a great favorite in the 7mm-08 and 308 cartridges.
It has very wide applications for rifle cartridges.
Source: Lyman Reloading Manual 47th Edition
H380™ was an unnamed spherical rifle propellant when the late Bruce Hodgdon first used it. When a 38.0 grain charge behind a 52 grain bullet gave one hole groups from his 22 caliber wildcat (now called the 22-250), he appropriately named the powder H380. H380 is also a superb performer in the 220 Swift, 243, 257 Roberts and other fine varmint cartridges.
Available in 1 lb. & 8 lb. containers.
