Powder Checks · Bullet Checks · Mark 7 reloading sensors

Powder directory

Alliant Reloder

Alliant Reloder 25

A slow-burning powder for heavy magnum big game loads and large-capacity cartridges, including the Weatherby magnums.

A heavy magnum powder for large-capacity cases — the Weatherby magnums, .338 Winchester Magnum and the big overbore hunting rounds — where a slower powder buys velocity for a given pressure. It carries a de-coppering additive, which earns its keep when you are driving jacketed bullets that hard. The costs are the ones every overbore magnum load carries: a lot of powder, a lot of heat, real throat erosion over a barrel life, and no TZ stabilisation, so seasonal verification is not optional. In anything short of a genuinely large case it fills poorly and burns incompletely.

  • .300 Weatherby Magnum
  • .340 Weatherby Magnum
  • .338 Winchester Magnum
  • large-capacity magnum hunting loads

Who has Alliant Reloder 25 today

Checked October 10

Out of stock at every store we track

StoreSizeShelfIn hand /lbStock
Lohman ArmsHazmat charged, amount not published5 lb$180.95$42.48 est.Out
Graf & Sons$23.50 hazmat per package5 lb$298.99$67.29Out
Lohman ArmsHazmat charged, amount not published1 lb$37.95$69.39 est.Out
Bruno Shooters Supply$26.95 hazmat + $19.95 ship5 lb$331.99$75.78Out
Graf & Sons$23.50 hazmat per package1 lb$65.99$103.44Out
Bruno Shooters Supply$26.95 hazmat + $19.95 ship1 lb$70.99$117.89Out

“In hand” is the shelf price plus that store’s hazmat fee and shipping, spread over one container. Stock is checked once a day — confirm on the store’s page before ordering. Compare all powders →

Official Alliant load data →

Specifications

ManufacturerAlliant
Product familyAlliant Reloder
StatusCurrently produced
Applicationrifle
Grain formextruded
Lee VMD (bulk density)0.0707 cc per grain · 0.92 g/cc
Burn-rate position175 of 198 (fastest = 1) — what this means
Typical cartridges.300 Weatherby Magnum, .340 Weatherby Magnum, .338 Winchester Magnum

Grain shape

Long, heavy-web extruded sticks — the thick wall is what makes it this slow, and it takes a big case and a long barrel to give that wall time to burn through. Long grains bridge at a magnum case mouth and are awkward to meter accurately; a drop tube and a trickler are standard practice here.

Why geometry decides burn rate more than chemistry does: Shape Is the Product.

Contains a proprietary de-coppering additive. Made in Sweden to Alliant's specifications.

Burn rate

Slower than Reloder 23; a heavy magnum rifle speed.

Chart agreement: consistent across charts - listed in the same relative neighbourhood by every publisher that carries it Ranked by: Hodgdon, Alliant, Shooters World, Wolfe/LoadData.

Powders charted near it — neighbours on the chart are not substitutes, and adjacency tells you nothing about what charge either one takes:

Sources

The specifications above come from Alliant's own published documentation, linked below. The two “RCM's read” sections are ours, not theirs — our assessment of what this powder is like to load, drawn from its published characteristics and from what handloaders consistently report. No manufacturer endorses them and no source below backs them. If you think we have one wrong, tell us — we would rather fix it.

Other Alliant powders

Back to the full directory →