Which burns faster, IMR 7977 or IMR 8133?

IMR 7977 is the faster-burning of the two (rank #80 vs #83 — lower rank burns faster).

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IMR 7977 vs IMR 8133

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Which burns faster, IMR 7977 or IMR 8133?: IMR 7977 is the faster-burning of the two (rank #80 vs #83 — lower rank burns faster).
What cartridges do IMR 7977 and IMR 8133 both load?: Both powders are listed for .338 Lapua Magnum, .28 Nosler, .300 PRC, .416 Remington Magnum, .338 Remington Ultra Magnum, 7mm PRC, among 9 shared cartridges.