IMR Classic
IMR 7828 SSC
A magnum rifle propellant for large-capacity cases with heavy bullets. SSC stands for Super Short Cut: the kernels are cut short so the powder meters close to a spherical powder while retaining extruded burn characteristics.
The slow magnum workhorse of the IMR line, and the one to reach for with heavy bullets in .300 Weatherby, 7mm Remington Magnum and .338 Winchester Magnum. Super Short Cut is not marketing: the chopped kernels settle far better in a big case and meter much closer to a ball powder than the classic IMR sticks do, all without changing the burn rate. It has no temperature-stability claim, which matters most exactly where this powder lives, which is near-maximum magnum loads on a hot day.
- .300 Weatherby Magnum
- heavy-bullet 7mm Remington Magnum
- .338 Winchester Magnum
- .270 Weatherby Magnum
Who has IMR 7828 SSC 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 | $374.99 | $52.74 | Out |
| Hodgdon (direct)Terms not published | 8 lb | $435.99 | $58.43 est. | Out |
| Graf & Sons$23.50 hazmat per package | 8 lb | $431.99 | $58.68 | Out |
| Hodgdon (direct)Terms not published | 1 lb | $61.99 | $93.43 est. | Out |
| Bruno Shooters Supply$26.95 hazmat + $19.95 ship | 1 lb | $51.99 | $98.89 | Out |
| Graf & Sons$23.50 hazmat per package | 1 lb | $61.99 | $99.44 | 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) | 0.0725 cc per grain · 0.89 g/cc |
| Composition | single-base |
| Temperature stable | Not marketed as temperature-stable |
| Burn-rate position | 174 of 198 (fastest = 1) — what this means |
| Typical cartridges | 7mm Remington Magnum, 300 Weatherby Magnum, 270 Weatherby Magnum, 338 Winchester Magnum |
Grain shape
Extruded single-perforated tube, cut short. Neutral-burning like any tube, but the short kernels stop bridging in the drop tube and stop getting sheared by the measure, which is the entire point of the SSC version.
Why geometry decides burn rate more than chemistry does: Shape Is the Product.
Hodgdon states that IMR 7828 SSC has exactly the same burn rate as the older standard IMR 7828 and uses the same published data, but that the shorter kernels allow noticeably better case fill; entries where standard 7828 will not fit are marked in Hodgdon's data. Made in Canada. Not listed as temperature stable.
Burn rate
Slow magnum rifle speed, slower than IMR Enduron 4955 and faster than IMR Enduron 7977.
Chart agreement: consistent on position; naming varies between publishers - Vihtavuori prints it as IMR4828SSC and Wolfe/LoadData as IMR-7828SSC. Ranked by: Hodgdon, Vihtavuori, Wolfe/LoadData.
Powders charted near it — neighbours on the chart are not substitutes, and adjacency tells you nothing about what charge either one takes:
- Norma MRP-2 (position 171)
- Alliant Reloder 23 (position 172)
- Vihtavuori N165 (position 173)
- Alliant Reloder 25 (position 175)
- Accurate High Country (position 176)
- Vihtavuori N565 (position 177)
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.