Which burns faster, 2015 or H322?

H322 is the faster-burning of the two (rank #52 vs #54 — lower rank burns faster).

What cartridges do 2015 and H322 both load?

Both powders are listed for .30 Remington AR, .223 Remington, .222 Remington Magnum, 6.8mm Remington SPC, .221 Remington Fireball, .17 Remington.

Powder head-to-head

Both powders on one page: burn-rate position, temperature sensitivity and the 6 cartridges they share, with the substitution note from the reference.

FastestSlowest

2015 #54 · H322 #52

Similar small rifle powder applications. Work up from published starting loads.

Confidence: Community. Always start at published minimums and work up.

Can I substitute 2015 for H322?: Similar small rifle powder applications. Work up from published starting loads. Confidence: Community. Always start at published minimum charges and work up.
Which burns faster, 2015 or H322?: H322 is the faster-burning of the two (rank #52 vs #54 — lower rank burns faster).
What cartridges do 2015 and H322 both load?: Both powders are listed for .30 Remington AR, .223 Remington, .222 Remington Magnum, 6.8mm Remington SPC, .221 Remington Fireball, .17 Remington.