IMR Classic
IMR 7828
The original full-length-kernel version of IMR 7828, a slow magnum rifle powder. It has been superseded in the catalogue by the short-cut IMR 7828 SSC.
Discontinued. Canisters still circulate, but the maker no longer produces it — and load data for it may be withdrawn or archived.
Specifications
| Manufacturer | IMR |
|---|---|
| Product family | IMR Classic |
| Status | Discontinued |
| Application | rifle |
| Grain form | extruded |
| Composition | single-base |
| Typical cartridges | 7mm Remington Magnum, 300 Weatherby Magnum, 338 Winchester Magnum |
Discontinued in favour of IMR 7828 SSC. Hodgdon states the two share exactly the same burn rate and the same published data; the SSC version simply meters better and fills the case more efficiently. Only the SSC version is currently listed.
Data confidence
We flag entries we could not fully verify rather than presenting them as solid:
- Discontinued — no live manufacturer product page; details drawn from archived or secondary manufacturer material.
Sources
Other IMR powders
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.