Alliant AR-Comp

Specifications

One of the three powders Alliant names as using TZ technology, alongside Reloder 16 and Reloder 23, and describes as very consistent across temperature extremes.

Burn rate

Between Reloder TS 11 and Reloder 15.

Chart agreement: position varies - Hodgdon ranks AR-Comp FASTER than Alliant Power Pro Varmint, but Alliant's own Reloader's Guide gives the opposite order (Power Pro Varmint, then AR-Comp). Vihtavuori bands the two together with Reloder 12. Wolfe/LoadData lists AR-Comp TWICE at two different positions, an internal contradiction in that chart. Ordered here per Hodgdon. 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:

• Accurate 2230 (position 106)
• Accurate 2460 (position 107)
• IMR 8208 XBR (position 108)
• Ramshot TAC (position 110)
• Alliant Power Pro Varmint (position 111)
• Hodgdon H4895 (position 112)

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.

AR-Comp is well regarded by the people who have it, but the dominant theme in 2025-2026 discussion is that it is effectively unobtainable, with users attributing the shortage to Alliant's manufacturing being absorbed by military demand.

• good reputation for AR match loads where users can get it
• availability is the entire conversation
• users report it working well through progressive measures

Availability: Widely reported as absent from shelves. Where large containers do appear, users describe the price as eye-watering. Community explanation is that Alliant/Bofors production is going to military contracts.

Consensus level: commonly held. Drawn from thread 1, thread 2, thread 3.

Sources

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

Other Alliant powders

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

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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.