Powder head-to-head

IMR 8133 vs Reloader 33

Burn-rate position

FastestSlowest

IMR 8133 #83 · Reloader 33 #85

Side by side

IMR 8133Reloader 33
ManufacturerIMRAlliant
Burn-rate rank#83#85
Burn categorySlowSlow
Grain shapeExtrudedExtruded
Temp sensitivityLowModerate
ApplicationsRifleRifle
Suppressor-friendlyNoNo
US availabilityModerateModerate
StatusDiscontinuedActive

Shared cartridges

FAQs

Which burns faster, IMR 8133 or Reloader 33?
IMR 8133 is the faster-burning of the two (rank #83 vs #85 — lower rank burns faster).
What cartridges do IMR 8133 and Reloader 33 both load?
Both powders are listed for .338 Lapua Magnum, .300 PRC, .416 Remington Magnum, .338 Remington Ultra Magnum, .378 Weatherby Magnum, 7mm PRC, among 11 shared cartridges.
PowderIMR 8133 in fullPowderReloader 33 in full