Is IMR Hi-Skor 800X good for 12 Gauge?

IMR Hi-Skor 800X is commonly listed for 12 Gauge (burn-rate rank #13). Other powders reloaders use for 12 Gauge include No. 1, CSB1, BA10. Verify charges against a published load manual.

Is IMR Hi-Skor 800X good for 10mm Auto?

IMR Hi-Skor 800X is commonly listed for 10mm Auto (burn-rate rank #13). Other powders reloaders use for 10mm Auto include Vihtavuori N320, CFE Pistol, Vihtavuori N340. Verify charges against a published load manual.

Is IMR Hi-Skor 800X good for 20 Gauge?

IMR Hi-Skor 800X is commonly listed for 20 Gauge (burn-rate rank #13). Other powders reloaders use for 20 Gauge include No. 1, CSB1, BA10. Verify charges against a published load manual.

Lindcott Armory

Hodgdon Powder Company · Flake

IMR Hi-Skor 800X

A medium pistol and shotgun powder at burn-rate rank #13 of 90, listed for 4 cartridges in the reference.

Manufacturer: IMR
Grain shape: Flake
Burn rank: #13
Category: Pistol/Shotgun Medium
Temp sensitivity: Moderate
Application: Shotgun
Origin: —
Status: Discontinued

Burn-rate position

FastestSlowest

Rank #13 on the burn-rate scale · Pistol/Shotgun Medium

Typical cartridges

12 Gauge, 10mm Auto, 20 Gauge, .40 S&W

By cartridge

12 Gauge also used: No. 1, CSB1, BA10

10mm Auto also used: Vihtavuori N320, CFE Pistol, Vihtavuori N340

20 Gauge also used: No. 1, CSB1, BA10

.40 S&W also used: Bull's-Eye, Clays, Vihtavuori N320

Similar burn rate

#13CompetitionRamshot #12Green DotAlliant #12N330Vihtavuori #12ASVectan #12S121Somchem

Supply & handling

Shortage-prone: No
Flash-suppressed: No

About this powder

Slower-burning companion to Hi-Skor 700X; designed for heavier 12-gauge loads and large-bore pistol cartridges (.40 S&W, 10mm). Discontinued when the IMR line was consolidated after the Hodgdon/IMR merger.

ChartSee it on the burn-rate spectrum BrowseEvery powder, ranked by burn rate

Sources & provenance

Manufacturer IMR — IMR — published load/burn-rate data archived