IMR Classic
IMR SR 4756
A dual-purpose shotshell and handgun powder from IMR's SR (Sporting Rifle) family of small-kernel extruded propellants, used for field shotshell loads and mid-range handgun work.
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 Canisters still circulate, but the maker no longer produces it — and load data for it may be withdrawn or archived.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 | shotshell, pistol |
| Grain form | extruded |
| Composition | single-base |
| Typical cartridges | 12 Gauge, 20 Gauge, 45 ACP, 38 Special |
Discontinued. Hodgdon no longer lists this powder among current IMR products and it does not appear on Hodgdon's current relative burn rate chart. No manufacturer product page remains; treat published characteristics from third-party sources with caution and use only data from a current or archived manufacturer manual.
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.