Alliant Unique

Specifications

Alliant describes the current formulation as cleaner burning than the original and says it works with most hulls, primers and wads. The handgun and shotshell product pages point at the same load data set.

Burn rate

The middle of Alliant's range; the reference point most shooters place other powders against.

Chart agreement: consistent across charts - listed in the same relative neighbourhood by every publisher that carries it Ranked by: Hodgdon, Alliant, Vihtavuori, 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:

• Alliant 20/28 (position 33)
• Vihtavuori N32C Tin Star (position 34)
• Winchester WinClean 244 (position 35)
• Hodgdon Universal (position 37)
• Alliant Power Pistol (position 38)
• Shooters World Ultimate Pistol (position 39)

What reloaders say about it

Unverified community anecdote. The following is a summary of what handloaders report in public forums. It is not manufacturer information, it has not been tested, it may be wrong, and it contains no load data by design. Treat it as colour, not guidance.

Unique is the archetypal 'dirty but beloved' powder. The near-universal report is heavy smoke and sooty fouling at light pistol loads, with an equally consistent community explanation: it burns much cleaner when run at higher pressure. Users who load it hot, or in magnum revolver and shotshell applications, report no complaints.

• heavy smoke and soot at light loads, described as muzzleloader-like
• reported to clean up substantially at higher pressures / upper end of published ranges
• long-standing versatility across pistol, revolver and shotshell
• some users dispute the dirty reputation entirely, tying it to how it is loaded

Availability: Treated as an old standby that is usually findable, though not immune to the general price escalation.

Reported cautions:

• Some of the smoke users attribute to the powder is attributed by other users to lead or coated bullets — the community itself does not agree on the cause.

Consensus level: widely held. Drawn from thread 1.

Sources

• Alliant product page
• alliantpowder.com/products/shotshell.aspx
• alliantpowder.com/resources/catalog/AP399_2023AlliantPowderReloadersGuide_Sing

Other Alliant powders

• Alliant 20/28
• Alliant 2400
• Alliant 410
• Alliant AR-Comp
• Alliant American Select
• Alliant BE-86
• Alliant Blue Dot
• Alliant Bullseye

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Verify the charge, not just the recipe

Good data gets you a safe starting point. It does not tell you what actually went into the case on stroke 340 — a bridged measure, a double charge, a squib. That is what an RCM Laser Powder Check is for.