Accurate
Accurate MAGPRO
A magnum rifle powder developed specifically for the Winchester and Remington short magnums, and applied to belted magnums as well.
The short-magnum ball: developed for the WSM and RSAUM family and used just as often in the belted magnums and 6.5-284 Norma. Its job is to fill a fat, short case to the neck and meter while doing it, which extruded powders at the same burn rate cannot match. Being a slow double-base ball it is not temperature stable, so summer-to-winter velocity drift is real and worth chronographing.
- 270 WSM
- 7mm WSM
- 300 Winchester Magnum
- 6.5-284 Norma
Who has Accurate MAGPRO today
Checked October 10In stock at 2 stores — lowest in hand $42.05/lb (8 lb at Lohman Arms)
| Store | Size | Shelf | In hand /lb | Stock |
|---|---|---|---|---|
| Lohman ArmsHazmat charged, amount not published | 8 lb | $304.99 | $42.05 est. | In stock ↗ |
| Graf & Sons$23.50 hazmat per package | 8 lb | $342.99 | $47.55 | In stock ↗ |
| Graf & Sons$23.50 hazmat per package | 1 lb | $46.99 | $84.44 | In stock ↗ |
| Lohman ArmsHazmat charged, amount not published | 1 lb | $42.99 | $74.43 est. | 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 | Accurate |
|---|---|
| Product family | Accurate |
| Status | Currently produced |
| Application | rifle |
| Grain form | spherical |
| Lee VMD (bulk density) | 0.0663 cc per grain · 0.98 g/cc |
| Composition | double-base |
| Temperature stable | Not marketed as temperature-stable |
| Burn-rate position | 179 of 198 (fastest = 1) — what this means |
| Typical cartridges | 270 WSM, 7mm WSM, 6.5-284 Norma, 300 Winchester Magnum |
Grain shape
Spherical with a thick web - the thick wall is what makes it slow, and the sphere is what keeps it dropping cleanly at magnum charge volume where a stick powder bridges. Degressive, so it front-loads its gas relative to a stick of the same speed.
Why geometry decides burn rate more than chemistry does: Shape Is the Product.
Manufacturer credits its metering properties for consistent performance. Made in the USA.
Burn rate
One of the slower Accurate powders, charted just past Vihtavuori N170 and ahead of IMR 7977.
Chart agreement: consistent across the three charts that list it 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:
- Accurate High Country (position 176)
- Vihtavuori N565 (position 177)
- Vihtavuori N170 (position 178)
- IMR Enduron 7977 (position 180)
- Alliant Reloder 26 (position 181)
- Hodgdon H1000 (position 182)
Sources
The specifications above come from Accurate'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.