A magazine from Rock Canyon MunitionsNo. 1 · September 2026
TheMonthlyGrain
The only monthly market report on reloading powder. Every price, every shelf, every maker — built from 1,066 live listings we check every morning, and written by people who load.
- RCM powder index
- 99.5Aug 2026 = 100
- Listings priced
- 1,066canister powder, daily
- Retailers read in full
- 4every morning
- Powders tracked
- 228merged burn-rate chart
Flat Prices, Missing Brands
The index holds at 99.5. Seven price moves, all down. Three brands missing from the shelf.
Free to read. No load data, ever. One general edition and four cut by what you load — handgun, large handgun, small rifle, large rifle.
What this is
Once a month we take every price and stock flag we have collected from the retailers we read — every morning, every canister powder — and write down what happened. One general edition covers the whole market: the index, every price move, availability by maker, what the parent companies said. Four more editions cut the same month by what you load, so the page you read is about the powders you buy.
- IThe MarketThe whole canister market: the index, every price move, availability by maker, the owners.
- IIHandgunFast and medium pistol powders — target, 9mm/.45 service loads, light revolver.
- IIILarge HandgunMagnum revolver and heavy auto powders — .357, .44 Mag, 10mm, .454 and the like.
- IVSmall RifleFast-to-medium rifle powders — .223, .300 BLK, 6.5 Grendel, .308, .30-30, benchrest cases.
- VLarge RifleMedium-slow to magnum rifle powders — 6.5 Creedmoor, .270, .30-06, the 7mm and .300 magnums, .338 Lapua, .50.
No load data appears anywhere in these pages, by design. Prices are shelf prices; the price desk does the hazmat-and-shipping arithmetic per retailer.