IMR Classic
IMR 4064
Hodgdon calls this the most versatile propellant in the IMR line, covering everything from small varmint cartridges to medium magnums, with an emphasis on uniformity and accuracy.
The accuracy reputation is real: it has been a first-choice .308 and .30-06 powder for match and milsurp shooters for generations, with excellent case fill in full-size .30-caliber cases. The trouble is entirely mechanical. The long kernels meter horribly, and this is the single most cited powder for cut kernels and wandering thrown charges on a progressive, so treat it as a powder you weigh rather than one you throw. Supply is the other problem: it has been scarce for years, and people who still have it tend to reserve it for loads they already developed.
- Garand .30-06
- bolt-gun .308 match
- heavy-for-caliber .30-06
- varmint .22-250
Who has IMR 4064 today
Checked October 10Out of stock at every store we track
| Store | Size | Shelf | In hand /lb | Stock |
|---|---|---|---|---|
| Bruno Shooters Supply$26.95 hazmat + $19.95 ship | 8 lb | $381.99 | $53.61 | Out |
| Lohman ArmsHazmat charged, amount not published | 8 lb | $435.95 | $58.42 est. | Out |
| Hodgdon (direct)Terms not published | 8 lb | $442.99 | $59.30 est. | Out |
| Graf & Sons$23.50 hazmat per package | 8 lb | $438.99 | $59.55 | Out |
| Hodgdon (direct)Terms not published | 1 lb | $62.99 | $94.43 est. | Out |
| Lohman ArmsHazmat charged, amount not published | 1 lb | $63.95 | $95.39 est. | Out |
| Bruno Shooters Supply$26.95 hazmat + $19.95 ship | 1 lb | $52.99 | $99.89 | Out |
| Graf & Sons$23.50 hazmat per package | 1 lb | $62.99 | $100.44 | Out |
“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 →
Specifications
| Manufacturer | IMR |
|---|---|
| Product family | IMR Classic |
| Status | Currently produced |
| Application | rifle |
| Grain form | extruded |
| Lee VMD (bulk density) | 0.0745 cc per grain · 0.87 g/cc |
| Composition | single-base |
| Temperature stable | Not marketed as temperature-stable |
| Burn-rate position | 119 of 198 (fastest = 1) — what this means |
| Typical cartridges | 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Short Magnum, 308 Winchester, 338 Winchester Magnum |
Grain shape
Long single-perforated extruded sticks, neutral-burning, so pressure builds in a controlled way and it fills a big .30 case honestly. Those same long kernels bridge across the drop tube and get sheared by the measure's blade; there is no trick that fixes that, only a scale.
Why geometry decides burn rate more than chemistry does: Shape Is the Product.
Extruded single-base, in production since 1935, made in Canada. The long kernels are known to meter less consistently than short-grain or spherical powders. Not listed as temperature stable.
Burn rate
Medium burn speed, essentially alongside IMR Enduron 4166 and just slower than IMR 4895.
Chart agreement: consistent across charts - listed in the same relative neighbourhood by every publisher that carries it Ranked by: Hodgdon, 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 2495 (position 117)
- IMR Enduron 4166 (position 118)
- Norma 202 (position 120)
- Accurate 4064 (position 121)
- Shooters World Tactical Rifle (position 122)
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.
IMR 4064 has a devoted following among milsurp and M1 Garand shooters and people loading .30-06 and .308, described as a genuinely do-all powder with excellent case fill in large-capacity .30 cases. The dominant sentiment in current threads is nostalgia and frustration: people who used it for decades say they simply cannot find it and have moved on.
- strong reputation for M1 Garand and milsurp .30-cal loads
- described as excellent case fill in .30-06-class cases
- notoriously poor metering through progressive-press powder measures
- seen as scarce enough that finding it is post-worthy
Availability: Widely reported as very hard to find in 2025-2026, and several users describe it as disappeared from shelves entirely for years. When it does surface it is generally in new-old-stock lots or large kegs at prices well above what users consider normal. Hoarding is frequently blamed in these threads.
Reported cautions:
- At least one user reports moving to Vihtavuori powders because they could no longer source 4064, and now reserves their remaining supply only for previously developed loads — an example of scarcity forcing a full re-development, not a swap.
- One user specifically switched away because the measure on their progressive press would not handle it.
Consensus level: widely held. Drawn from thread 1, thread 2.
Sources
The specifications above come from IMR'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.