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 .416 Remington Magnum, 7mm PRC, 6.5-300 Weatherby Magnum, 7mm Backcountry, .338 Remington Ultra Magnum, .300 PRC, among 11 shared cartridges.

Powder head-to-head

IMR 8133 vs Reloader 33

Both powders on one page: burn-rate position, temperature sensitivity and the 11 cartridges they share.

Compare another pair Burn-rate chart

Burn-rate position

FastestSlowest

IMR 8133 #83 · Reloader 33 #85

Side by side

	IMR 8133	Reloader 33
Manufacturer	IMR	Alliant
Burn-rate rank	#83	#85
Burn category	Slow	Slow
Grain shape	Extruded	Extruded
Temperature sensitivity	Low	Moderate
Applications	Rifle	Rifle
Suppressor-friendly	No	No
US availability	Moderate	Moderate
Status	Discontinued	Active

Shared cartridges

.416 Remington Magnum
7mm PRC
6.5-300 Weatherby Magnum
7mm Backcountry
.338 Remington Ultra Magnum
.300 PRC
.30 Nosler
7mm Remington Ultra Magnum
.338 Norma Magnum
.378 Weatherby Magnum
.338 Lapua Magnum

PowderIMR 8133 in full PowderReloader 33 in full HubCompare another pair

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 .416 Remington Magnum, 7mm PRC, 6.5-300 Weatherby Magnum, 7mm Backcountry, .338 Remington Ultra Magnum, .300 PRC, among 11 shared cartridges.