Powder head-to-head

Reloader 26 vs Retumbo

Burn-rate position

FastestSlowest

Reloader 26 #79 · Retumbo #78

Substitution

Similar burn rate; reduce 3–5% when substituting.

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

Side by side

Reloader 26Retumbo
ManufacturerAlliantHodgdon
Burn-rate rank#79#78
Burn categoryMedium-SlowMagnum Rifle
Grain shapeExtrudedExtruded
Temp sensitivityLowModerate
ApplicationsRifleRifle
Suppressor-friendlyNoNo
US availabilityModerateCommon
StatusActiveActive

Shared cartridges

FAQs

Can I substitute Reloader 26 for Retumbo?
Similar burn rate; reduce 3–5% when substituting. Confidence: Community. Always start at published minimum charges and work up.
Which burns faster, Reloader 26 or Retumbo?
Retumbo is the faster-burning of the two (rank #78 vs #79 — lower rank burns faster).
What cartridges do Reloader 26 and Retumbo both load?
Both powders are listed for .300 Remington Ultra Magnum, .300 Winchester Magnum, .338 Lapua Magnum, 7mm Remington Magnum.
PowderReloader 26 in fullPowderRetumbo in full